Bradley cut a square hole out of wood in wood shop. If the block was cube shaped with side lengths of 8 inches and the hole had side lengths of 3 inches how much wood was left after the hole was cut out?

f(x) = x^3 -2x^2 -3x

x( x^2 -2x-3)

x( x^2 +x -3x -3)

x( x(x+1) -3(x+1))

x( x-3)( x+1)

so zeroes are 0, 3,-1

its (2) option

it would take 5 hours i think idk i'm not that good at math.can you me with my questions i need asap.