Question

How do you use the remainder theorem to find P(c) `P(x)=x^3+4x^2-8x-6`,a=-2?

Answer 1

18

Explanation:

To find the remainder if P(x) is divided by x+a , plug in x= -a in P(x)

P(-a) = `-a^3 +4a^2 +8a -6`. Here a is given to be -2, hence P(-2)= -8+16+16-6=18