SOLUTION: Given that f(x) is a cubic function with zeros at -2 and 2 i - 1 , find an equation for f(x) given that f(9) = -5.

Algebra ->  Square-cubic-other-roots -> SOLUTION: Given that f(x) is a cubic function with zeros at -2 and 2 i - 1 , find an equation for f(x) given that f(9) = -5.       Log On


   

Question 915010: Given that f(x) is a cubic function with zeros at -2 and 2 i - 1 , find an equation for f(x) given that f(9) = -5.
Answer by josgarithmetic(39628) About Me  (Show Source):
You can put this solution on YOUR website!
f%28x%29=a%28x%2B2%29%28x-%282i-1%29%29%28x-%282i%2B1%29%29

Simplify that, but do NOT multiply the factor, "a". Instead, use the given f%289%29=-5 to solve for and compute "a".