Question

the value of the polynomial x^3+3x^2-2x+1 at x=2​

Answer 1

$let \: f(x) = {x}^{3} + 3 {x}^{2} - 2x + 1$

So,

$f(2) = {2}^{3} + 3. {2}^{2} - 2x + 1 \\ = 8 + 12 - 4 + 1 \\ = 21 - 4 \\ = 17$

HOPE THIS COULD HELP!!!