SOLUTION: find the zeros of the polynomial function f(x) = x^3 + 4x^2 - 9x -36

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: find the zeros of the polynomial function f(x) = x^3 + 4x^2 - 9x -36      Log On


   

Question 629522: find the zeros of the polynomial function
f(x) = x^3 + 4x^2 - 9x -36
Answer by reviewermath(1029) About Me  (Show Source):
You can put this solution on YOUR website!
Solve for x: x%5E3+%2B+4x%5E2+-+9x+-36+=+0
%28x%5E3+%2B+4x%5E2%29+-+%289x+%2B+36%29+=+0
%28x%5E2%29%28x+%2B+4%29+-+9%28x+%2B+4%29+=+0
%28x+%2B+4%29%28x%5E2+-+9%29+=+0
%28x+%2B+4%29%28x+-+3%29%28x+%2B+3%29+=+0
x = -4, 3, -3
the zeros are -4, 3, and -3.