SOLUTION: Factor each polynomial as completely as possible...If a polynomial cannot be factored write "Prime" 4x^2-2x-30

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Question 21743: Factor each polynomial as completely as possible...If a polynomial cannot be factored write "Prime"
4x^2-2x-30
Answer by queenofit(120) About Me  (Show Source):
You can put this solution on YOUR website!
You must use the foil method,in reverse, do you know how????
4x^2 - 2x - 30
(4x+10)(x-3) to check use foil
first numbers 4x*x = 4x^2
outside numbers 4x* -3 =-12x
inside numbers 10 * x = 10x
last numbers 10*-3 = -30
you get 4x^2 -12x+10x-30
4X^2-2x-30