Question

Which of the following expressions is equivalent to the polynomial below? (8x-1)(64x^2+8x+1)

Answer 1

Given the expression

`(8x-1)\left(64x^2+8x+1\right)`

simplifying

`(8x)(64x^2+8x+1)-(1)(64x^2+8x+1)`
`(512x^3+64x^2+8x)-(64x^2+8x+1)`
`(512x^3)-(+1)`
`(512x^3-1)`

then the correct answer is

option A

512x^3 - 1