Question

Factorise.

(x + 2) (x - 3)(x - 7) (x - 2) + 64

Answer 1

I think so 2x-3x-7x-2x+64
So here +2x&-2x will be canceled
-21x+64
x= 64-21
X= 43
Sorry but I dont it is wrong or right

Answer 2

x^4 - 10x^3 + 17x^2 + 40x - 20