Question

How to factor 5r^2+10r-240

Answer 1

5 ( r+8) (r-6)

Explanation:

5r^2+10r-240

First factor out the greatest common factor

5( r^2 +2r - 48)

Now factor what is inside the parentheses

What multiplies to -48 and adds to 2

8*-6 = -48

8-6 = 2

5 ( r+8) (r-6)