Question

What are the x-intercepts of the graph of the function below? y=x^2+2x-15

Answer 1

Answer:

x=3  and x=-5

Step-by-step explanation:

To find the x intercepts set y =0 and solve for x

0 = x^2+2x-15

Factor

What two numbers multiply to -15 and add to 2

5*-3 = -15

5+-3 =2

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

Using the zero product property

x+5=0   x-3 =0

x=-5      x=3

Answer 2

-5 and 3 will be because for -5 it is (-5,0) and 3 is (3,0)

Step-by-step explanation: