Question and answer
Solve the following quadratic equation using the quadratic formula and then choose the correct solution set. 5x2 + 7x = 6 {-2, 2} {-2, } {-, 2}
5x^2 + 7x = 6 5x^2 + 7x - 6 = 0 a = 5, b = 7, c = -6 b^2 - 4ac = 7^2 - 4(5)(-6) = 49 + 120 = 169 x = (-7 ± sqrt 169)/10 = (-7 ± 13)/10 = 3/5 or -2
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Asked 2/12/2015 2:11:06 PM
Updated 2/12/2015 9:36:38 PM
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5x^2 + 7x = 6
5x^2 + 7x - 6 = 0
a = 5, b = 7, c = -6
b^2 - 4ac = 7^2 - 4(5)(-6) = 49 + 120 = 169
x = (-7 ± sqrt 169)/10
= (-7 ± 13)/10
= 3/5 or -2
Added 2/12/2015 9:36:38 PM
This answer has been confirmed as correct and helpful.
Confirmed by sujaysen [2/13/2015 7:21:56 AM]
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