SOLUTION: i need help factoring polynomials? 6xsq.+7x-20

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: i need help factoring polynomials? 6xsq.+7x-20       Log On


   



Question 250172: i need help factoring polynomials?
6xsq.+7x-20

Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
6x^2+7x-20
what are factors of 6=3,2 or 6,1
what are factors of 20=5,4 or 10,2 or 20,1
arrange such that outer and inner add up to +7 [15(3*5) and -8 2*(-4)]
one must be minus to get -20
(2 x+5) (3 x-4)
foil
6x^2
-8x
15x
-20