Question

Which one? And show work

Answer 1

we are given

`(8x^4-128)`

Firstly , we can factor out 8

`8(x^4-16)`

now, we can rewrite it

`8(x^4-(2)^4)`

now, we can use formula

`(a^4-b^4)=(a^2+b^2)(a-b)(a+b)`

so, we will get

`8(x^4-(2)^4)=8(x^2+4)(x-2)(x+2)`.............Answer