SOLUTION: witch of the following is a factored form of the expression 5x^2-13x-6?

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Question 1150011: witch of the following is a factored form of the expression 5x^2-13x-6?
Found 2 solutions by ikleyn, MathTherapy:
Answer by ikleyn(52860) About Me  (Show Source):
You can put this solution on YOUR website!
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Find the roots of the quadratic equation


    5x^2 - 13x - 6 = 0


using quadratic formula


    x%5B1%2C2%5D = %2813+%2B-+sqrt%2813%5E2+%2B+4%2A5%2A6%29%29%2F%282%2A5%29 = %2813+%2B-+sqrt%28289%29%29%2F10 = %2813+%2B-+17%29%2F10.%0D%0A%0D%0A%0D%0AThe+roots+are++3+and++%7B%7B%7B-4%2F10%29 = -2%2F5.


Hence, factored form is   5x^2 - 13x - 6 = 5%2A%28x-3%29%2A%28x-%28-2%2F5%29%29 = (x-3)*(5x+2).   ANSWER


Answer by MathTherapy(10556) About Me  (Show Source):
You can put this solution on YOUR website!

witch of the following is a factored form of the expression 5x^2-13x-6?
Shouldn't "witch" [sic which] of the following is a factored form of the expression" be FOLLOWED by CHOICES?

(5x + 2)(x - 3) <===== FACTORED FORM