Question

(x–4)(x2 +4x+16) – (x–1)(x2 +x+1)

Answer 1

$(x-4)( x^{2} +4x+16) - (x-1)( x^{2} +x+1)$

$( x^{3} -64)-( x^{3}-1)$

$x^{3} -64- x^{3}+1$

-64+1

-63