factor 7x^2+3x-54
http://www.cymath.com/answer.php?q=factor%207x^2%2B3x-54
The only factors of 7 are 7 and 1.
There are several pairs of factors of 54, the pair that works is 3 and 18.
7x2 + 3x - 54 = (7x - 18)(x + 3)
