Question

Use synthetic substitution to evaluate the polynomial for the given value x = -3.
P(x) = x3 + 3x2 + 4
P(-3) = ________ Enter a number only.

Answer 1

substitute x = -3 into the function

P(-3) = (-3)^3 + 3(-3)^2 + 4

= -27 + 27 + 4
= 4

or by polynomial division



then Q(x) = x^2 R(x) = 4