Joseph A. answered • 01/22/19

Experienced Math and Test Prep Tutor

This problem is an application of the Factor Theorem (https://en.wikipedia.org/wiki/Factor_theorem). If you don't want to go to Wikipedia, the Factor Theorem says,

If *a* is a root (or zero) of a polynomial, then *(x-a)* is a factor of that polynomial, and if *(x-a)* is a factor of a polynomial, then *a* is a root (zero) of that polynomial.

Hence if we have a list of all the zeros, we can recover the original polynomial. For example,

If 2 and 3 are the zeros of a polynomial, then the polynomial is equal to (x-2)(x-3) = x^2 - 5x + 6.

Do the same with your problem and you should reach the solution in no time!