Question

What polynomial function has the zeros -3,1,5

Answer 1

x³ - 3 x² - 13 x + 15 = 0

Explanation:

Basically you can create three factors like this:

(x+3)(x-1)(x-5)=0

That will each represent one zero.

Work it out and you get x³ - 3 x² - 13 x + 15 = 0