Question

si p(x)=x3-3x calcula :p(3)-p(2)

Answer 1

$p(3) = {3}^{3} - 3(3) = 27 - 9 = 18 \\ p(2) = {2}^{3} - 3(2) = 8 - 6 = 2$

Luego:

$p(3) - p(2) = 18 - 2 = 16$