Math
posted by Mary .
I have 4 math problems that need to be solved by using factoring. I am unable to figure the following out. I have used the FOIL method but it seems not to be working out. I appreciate any help I can get. Thanks
^ exponet
3x^37x^2+2x
x^22x+5
x^47x^3+2x14
8x^22x=3
3x^37x^2+2x
First of all, factor out the x. That gives you
x(3x^2  7x +2)
The factors of the term in parentheses must be of the form (3x + a)(x+b), with ab = 2 and a+3b = 7. That means a = 1 and b=2
x(3x1)(x2) is the answer.
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