SOLUTION: Solve the cubic equation: {{{4(x)^(3)+4(x)^(2)-19x-10=0}}} *Please answer as soon as possible bro :)

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Solve the cubic equation: {{{4(x)^(3)+4(x)^(2)-19x-10=0}}} *Please answer as soon as possible bro :)      Log On


   

Question 465568: Solve the cubic equation:
4%28x%29%5E%283%29%2B4%28x%29%5E%282%29-19x-10=0
*Please answer as soon as possible bro :)
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
4x%5E3%2B4x%5E2-19x-10=+%282x%2B1%29%282x%2B5%29%28x-2%29+=+0
Hence the roots are -1/2, -5/2, and 2.