SOLUTION: If P(x)=2x^3-9x^2+4x-1, find P(-2). Please and thank you!

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: If P(x)=2x^3-9x^2+4x-1, find P(-2). Please and thank you!      Log On


   

Question 188978: If P(x)=2x^3-9x^2+4x-1, find P(-2).
Please and thank you!
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
just substitute -2 for every occurence of x
:
P%28-2%29=2%28-2%29%5E3-9%28-2%29%5E2%2B4%28-2%29-1=-16-36-8-1=-61