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Factorising quadratics

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4x^2 + 12x + 9

(2x + 3)(2x + 3)

2x^2 - 7x - 15

(x - 5)(2x + 3)

4x^2 - 49

(2x - 7)(2x + 7)

8x^2 - 2x - 3

(2x + 1)(4x - 3)

6x^2 + 9x

3x(2x + 3)

2x^2 + 5x + 2

(x + 2)(2x + 1)

3x^2 - 12

3(x - 2)(x + 2)

16x^2 - 25

(4x - 5)(4x + 5)

18x^2 - 8

2(3x - 2)(3x + 2)

15x^2 - 5x

5x(3x - 1)

6x^2 - 19x + 10

(2x - 5)(3x - 2)

12x^2 - 27

3(2x - 3)(2x + 3)

x^2 + 7x + 12

(x + 3)(x + 4)

x^2 - 2x + 1

(x - 1)(x - 1)

5x^2 + 13x + 8

(x + 1)(5x + 8)

x^2 - 11x + 24

(x - 8)(x - 3)

x^2 + 10x + 25

(x + 5)(x + 5)

9x^2 - 30x + 25

(3x - 5)(3x - 5)

3x^2 + 11x + 6

(x + 3)(3x + 2)

x^2 - 36

(x - 6)(x + 6)