Question

What are the zeros of f(x)= x^2+x-30

A.x=-5 and x=6
B.x=-2 and x=15
C.x=-6 and x=5
D.x=-15 and x=2

Answer 1

C

Explanation:

The zeros of the function is the roots and solutions. To find them, factor the equation into two binomials.

`x^2 + x -30\\(x+6)(x-5)`

To solve, set each binomial to 0 and solve for x.

x+6 = 0

x = -6

x-5=0

x=5