Question

find the value p(x)=x^4+4x^3+5x^2-6x+9 at x=-2​

Answer 1

Answer:

$p( - 2) = {( - 2)}^{4} + 4 {( - 2)}^{3} + 5 {( - 2)}^{2} - 6( - 2) + 9 \\ \\ = 16 - 32 + 20 + 12 + 9 \\ \\ = 16 - 32 + 32 + 9 \\ \\ = 25$