SOLUTION: Find the zeros of the function f(x)=2x4-x³+3x²-3x-9 Note please that where it says 2x4 it's actually supposed to be 2x to the fourth power. Thank You.

Algebra ->  Rational-functions -> SOLUTION: Find the zeros of the function f(x)=2x4-x³+3x²-3x-9 Note please that where it says 2x4 it's actually supposed to be 2x to the fourth power. Thank You.       Log On


   

Question 38301: Find the zeros of the function f(x)=2x4-x³+3x²-3x-9
Note please that where it says 2x4 it's actually supposed to be 2x to the fourth power. Thank You.
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
Find the zeros of the function f%28x%29=2x%5E4-x%5E3%2B3x%5E2-3x-9
For short, I will use synthetic division and Descarte's Rule of Signs.
f%28x%29=%28%28x-%283%2F2%29%29%28x%2B1%29%282x%5E2%2B6%29%29
Zeros should be: 1.5, -1, +-i(3)^(1/2)