Can I have some help on this question please?

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Ok, this is the final stretch of exams- (two left!!!) and Im confused on this factorisation question.

It says 'Factorise X(squared) + 9. Im not sure if you can factorise this?! If so, how do you do it?

Thank you!

Posted Sat 16th June, 2012 @ 12:21 by AmyPond
Edited by AmyPond on Sat 16th June, 2012 @ 12:32

41 Answers

  • 1 vote
  • (x+3)(x+3) I thinkk! :)

^ Not too sure though now looking at it :/

Answered Sat 16th June, 2012 @ 12:27 by Jade
Edited by Jade on Sat 16th June, 2012 @ 12:28
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Ah. That makes sense! Thank you! Ive only been taught to do stupidly hard ones for my additional maths exam and forgot about ones like this! But would that give you x (squared) + 6x + 9?

Answered Sat 16th June, 2012 @ 12:28 by AmyPond
Edited by AmyPond on Sat 16th June, 2012 @ 12:29
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haha no worries :) when is your exam? good luck! I have one on tuesday 

Answered Sat 16th June, 2012 @ 12:30 by Jade
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tuesday too! good luck:) I did one last wednesday and it didnt go too well :\ So I am trying to revise really hard to bring my grade up to an a...:\ hope it goes ok for you!

Answered Sat 16th June, 2012 @ 12:31 by AmyPond
Edited by AmyPond on Sat 16th June, 2012 @ 12:32
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^ hm good point! I'm not too sure then sorry ): 

Answered Sat 16th June, 2012 @ 12:32 by Jade
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no worries:) How many exams have you got left?

Answered Sat 16th June, 2012 @ 12:33 by AmyPond
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aw hopefully you just think you did bad, and then you turn out with a good grade (love it when that happens haha) :) thanks!

Answered Sat 16th June, 2012 @ 12:33 by Jade
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I have 3! how about you? i finish a week on monday! (finally)

Answered Sat 16th June, 2012 @ 12:33 by Jade
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2 - also finishing a week monday:) Maths and then additional maths- what about you?

Answered Sat 16th June, 2012 @ 12:34 by AmyPond
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I think its - and + guys :)

Answered Sat 16th June, 2012 @ 12:35 by Me :D
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i have maths, textiles design technology and geography. ^hmm it could be! :) 

Answered Sat 16th June, 2012 @ 12:36 by Jade
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yeah i thought it could be - and + but the only problem is that is a +9 not a - 9 at the end...:\

Answered Sat 16th June, 2012 @ 12:36 by AmyPond
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ah nice... I cant wait until its all over:):) my last exam is 2 and a half hours so its going to be a long morning!

Answered Sat 16th June, 2012 @ 12:37 by AmyPond
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aa too bad! at least you'll get a massive summer holiday to make up for it haha!

Answered Sat 16th June, 2012 @ 12:38 by Jade
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yeah its going to be awesome- it sucks that results day isnt until the end of august though...

Answered Sat 16th June, 2012 @ 12:42 by AmyPond
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oh yeah.. i was thinking difference of two squares and now im confuzzled, sorry :S i did check on mathswatch but i didnt find it :| and count yourself lucky dudes, my birthdays on results day so i kinda have to get good grades :LL

Answered Sat 16th June, 2012 @ 12:45 by Me :D
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yeah my mathswatch didnt have it either...is yours the one with the really patronising lady on it?

and aw..but on the bright side, if you do well then its something nice to celebrate:)

Answered Sat 16th June, 2012 @ 12:47 by AmyPond
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aha yeaahh had to restrain myself from hitting the screen :P but then again, if i didnt use mathswatch, i'd have been so screwed! so thank you patronising lady xD and yeah true, i guess xD

Answered Sat 16th June, 2012 @ 12:49 by Me :D
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Im the same;) At the end of an exercise with her explaining something, even on the a/a* bit Im like

"IM 16 YEARS OLD DOING MY GCSES NOT A FOUR YEAR OLD TODDLER STOP TALKING TO ME LIKE I HAVE A CABBAGE FOR A BRAIN LADY!" and take deep breaths..:L seirously though she needs to re-evaluate the way she talks to teenagers...

Answered Sat 16th June, 2012 @ 12:57 by AmyPond
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Hahahahaha! I know right! maybe as the grades go up, she should start talking more and more normally xD was it just me who had this or.. like, when you have a past paper and you dont know how to do a question, you go on mathswatch for the topic and it gives you the most basic type of that question and youre like WHUUUT. and then you frantically search google for the question xD

Answered Sat 16th June, 2012 @ 13:05 by Me :D
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yeah maybe- however,if i was a D grade student i think it would be degrading to be talked to like that. and yeah- all the time! mathswatch is good for basics but thats about it...speaking of which, do you know what standard deviation is?? its not on there...

Answered Sat 16th June, 2012 @ 13:20 by AmyPond
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True.. yeah maybe we just need a new person :P and i used to be really bad at maths, i used to sleep in most of the lessons and my teacher pretty much hated me :L but then in the week before the maths linear exam, i just went on mathswatch loooaadss for like a week, and i got an A! definately never doing maths again, ever, though xD and it says its the "spread of data" so to me, it seems like box plots? but im not sure o.O

Answered Sat 16th June, 2012 @ 13:27 by Me :D
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Ah Im doing Maths, Maths stats and physics (as well as english) for A level, so its gonna be fun! What about you?

Answered Sat 16th June, 2012 @ 13:49 by AmyPond
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I don't think you can factories it unless it was factories x^2-9 which would be (x+3)(x-3) which is the difference of two squares!

Answered Sat 16th June, 2012 @ 14:02 by Dilly
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ah - ok thanks:) Yeah it was on my past paper as X(squared) + 9- maybe its a typo?? also, do you know how to factorise

49 x(squared) - 100 y(squared) . the x and y values are the only squared terms:)

Answered Sat 16th June, 2012 @ 14:03 by AmyPond
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That would be the same thing as 49 and 100 are square numbers so....

(7x+10y)(7x-10y)

Did you do the additional maths exam at then end of may because thats what I did? 

Answered Sat 16th June, 2012 @ 14:05 by Dilly
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Thank you! um no- I have my  normal GCSE maths exam on tuesday and additional maths on the 25th June.. :| its gonna be hard!

Answered Sat 16th June, 2012 @ 14:07 by AmyPond
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Oh Okay. Good Luck!!!

Answered Sat 16th June, 2012 @ 14:10 by Dilly
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Thank you! do you have any exams left?

Answered Sat 16th June, 2012 @ 14:11 by AmyPond
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I have 3. German and Geography on Monday and then another German on the 27th. Do you only have maths and add maths left?

Answered Sat 16th June, 2012 @ 14:12 by Dilly
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yeah only those and im free! well, good luck!

Answered Sat 16th June, 2012 @ 14:13 by AmyPond
Edited by AmyPond on Sat 16th June, 2012 @ 14:13
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Thanks

Answered Sat 16th June, 2012 @ 14:14 by Dilly
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wow sounds tough! good luck :) and like, pretty much the opposite of what youre doing :L Biology, Chemistry, Sociology and Business Studies :D what kinda job are you thinking of doing?

Answered Sat 16th June, 2012 @ 14:14 by Me :D
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I have no idea! Im sort of hoping i can figure it out during 6th form...what about you?

Answered Sat 16th June, 2012 @ 14:15 by AmyPond
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Oh right, thats cool, and with your subjects, you can still pretty much do anything :D and a nurse :L but im kinda worried that like, halfway into Uni or something, ill change my mind D: and theres not much else i could do with that degree, d'you know what i mean?

Answered Sat 16th June, 2012 @ 14:24 by Me :D
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ah sounds cool- and i guess you can go into midwifery or a GP some sort of other medical proffession, but i see what you mean:) Well, we have 2 years to decide!

Answered Sat 16th June, 2012 @ 14:43 by AmyPond
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yeah, thanks :D and yeahh, atleast weve got a range of A-levels so we should be okay :D woohoo last exam on monday and then its all over, cant wait! how about you?

Answered Sat 16th June, 2012 @ 17:27 by Me :D
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Monday 25th - so a week and two days - and counting!

Answered Sat 16th June, 2012 @ 18:20 by AmyPond
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goodluck with ur maths exam xD ***

Answered Sat 16th June, 2012 @ 19:38 by Namita
Edited by Namita on Sat 16th June, 2012 @ 19:38
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Awww soldier on dude, you can do it! :D 

Answered Sat 16th June, 2012 @ 20:42 by Me :D
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Thank you:) good luck everyone!

Answered Sun 17th June, 2012 @ 09:04 by AmyPond