Thread: real and imaginary solutions

find all real and imaginary solutions of f(x) = x^3 + x^2 + 13x -15

Originally Posted by kenzie103109

find all real and imaginary solutions of f(x) = x^3 + x^2 + 13x -15

You should be able to see that .

So by the remainder and factor theorems, that means is a factor.

By using long division:

.


Now use the Quadratic Formula on the Quadratic factor to find the imaginary solutions.