Expansion 2 by 2 linear expressions Flashcards Preview

Expansion & Factorisation of Algebraic expressions > Expansion 2 by 2 linear expressions > Flashcards

Flashcards in Expansion 2 by 2 linear expressions Deck (13)
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1

What is the expansion of (a+b)(c+d)

2

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(x + 3)(x + 2)

x2 + 3x + 2x + 6

= x2 + 5x + 6

3

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(x + 3)(x - 2)

x2 + 3x - 2x - 6

= x2 + x - 6

4

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(x - 3)(x + 2)

x2 - 3x + 2x - 6

= x2 - x - 6

5

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(x - 3)(x - 2)

x2 - 3x - 2x - 6

= x2 - 5x - 6

6

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(2x + 3)(x + 2)

2x2 + 3x + 4x + 6

= 2x2 + 7x + 6

 

7

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(2x + 3)(x - 2)

2x2 + 3x - 4x - 6

= 2x2 - x - 6

 

8

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(2x - 3)(x + 2)

2x2 - 3x + 4x - 6

= 2x2 + x - 6

 

9

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(2x - 3)(x - 2)

2x2 - 3x - 4x + 6

= 2x2 - 7x + 6

 

10

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(x + 3)(x + 3)

x2 + 3x + 3x + 9

= x+ 6x + 9

11

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(x - 3)(x - 3)

x2 - 3x - 3x + 9

= x2 - 6x + 9

12

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(x - 3)(x + 3)

x2 - 3x + 3x - 9

= x2 - 9

13

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(x + 3)(x - 3)

x2 + 3x - 3x - 9

= x2 - 9