SOLUTION: HOW DO YOU SOLVE THE QUESTION: What are the roots of the function y=x^2+4x-45. i tried squaring but it doesnt factor.

Algebra ->  Square-cubic-other-roots -> SOLUTION: HOW DO YOU SOLVE THE QUESTION: What are the roots of the function y=x^2+4x-45. i tried squaring but it doesnt factor.      Log On


   



Question 129566: HOW DO YOU SOLVE THE QUESTION: What are the roots of the function y=x^2+4x-45.
i tried squaring but it doesnt factor.

Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
the roots are the values of x that make the value of the function zero
__ the points on the graph of the function where it crosses the x-axis

0=x^2+4x-45

factoring __ 0=(x+9)(x-5)