Question

Factorise (x + 4)^3 – 9x - 36​

Answer 1

Answer:

(x + 4 ) ³ - 9x - 36

Step-by-step explanation:

x³ + 64 +3 ×4×x (x+4) - 9x -36

x³ + 64 +12x² + 48x -9x -36

x³ +12x² + 39x +28

Hope it helps you bro

Answer 2

Answer:

$(x + 4)^3 - 9x - 36$

$(x + 4)^3 - 9(x + 4)$

$(x + 4)[(x + 4)^2 - 9]$                       Identity:  a²-b²=(a+b)(a-b)

$(x + 4)(x + 4 - 3)(x + 4 + 3)$  

$\bold{(x + 4)(x + 1)(x + 7)}$