Question 101963: How do you solve this factor?
Factor: 5x^2 + 5x – 30
Answer by Fombitz(32388)   (Show Source):
You can put this solution on YOUR website! 
First let's divide by 5 to see if it looks familiar.
From the FOIL (First, Outer, Inner, Last) method, we know,
In our case,
a + b =1
a*b=-6
The factors of 6 that are likely possible values are 2 and 3, let's get the signs right. Since a*b is negative, either a or b is negative. Since the sum is positive, the smaller one must be the negative one: a=3, b=-2.
To get back to your original equation we have to multiply by 5.
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