Question

If p= 2 find the value of; -2p3 -3p2 +4p+7​

Answer 1

$= 2 {p}^{3} - 3 {p}^{2} + 4p + 7$

$p = 2$

$= -2 {(2)}^{3} - 3 {(2)}^{2} + 4(2) + 7$

$= -2(8) - 2(4) + 8 + 7$

$= -16 - 8 + 15$

$= -24 + 15$

$= -9$