Multiplying expression (cont.)
Factorising single brackets
- To factorise an expression, you put the brackets in.
- you divide the terms by their highest common factor (HCF)
eg - 12x +24
HCF of 12x and 24 is 12.
12(x + 2)
Factorising Double brackets
- The two numbers in the brackets multiply to give the number at the end and add to give the number of xs
eg - ( x + 2 ) (x + 3 ) = x(2) + 3x + 2x + 6
= x(2) + 5x + 6 2 x 3 = 6 2+3=5
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