Question

factorise: 9x2 - 4(y + 2x)2​

Answer 1

9x

2

−4(y+2x)

2

(3x) {}^{2} - (2(y + 2x)) {}^{2}(3x)

2

−(2(y+2x))

2

(3x + 2(y + 2x)) \times (3x - 2(y + 2x))(3x+2(y+2x))×(3x−2(y+2x))

(3x + 2y + 4x)(3x - 2y - 4x)(3x+2y+4x)(3x−2y−4x)

(7x + 2y)( - x - 2y)(7x+2y)(−x−2y)

Answer 2

Step-by-step explanation:

see the attached document for the steps