# Formulae: Unit 9

Quadratic formula needs to be written in

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• Created by: annanolan
• Created on: 28-12-16 17:19
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How do you write x^2 + bx + c in completing the square form?
(x+b/2)^2 - (b/2)^2 + c
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How do you write ax^2 + bx + c in completing the square form?
a(x^2 + b/a x) + c
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How do you solve simultaneous equations?
Eliminate one of the terms by adding or subtracting the whole equation
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How do you find the coordinates where two graphs intersect?
Solve their equations simultaneously
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How do you write solutions to inequalities using set notation?
{x:x>2}
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How do you multiply or divide an inequality by a negative number?
Reverse the inequality signs
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## Other cards in this set

### Card 2

#### Front

How do you write x^2 + bx + c in completing the square form?

#### Back

(x+b/2)^2 - (b/2)^2 + c

### Card 3

#### Front

How do you write ax^2 + bx + c in completing the square form?

#### Back ### Card 4

#### Front

How do you solve simultaneous equations?

#### Back ### Card 5

#### Front

How do you find the coordinates where two graphs intersect?

#### Back 