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Mathematics
OpenStudy (anonymous):

Solve: 2x2 – x = 15 Can someone help me on how to solve this?

OpenStudy (anonymous):

its 2x^2 by the way

OpenStudy (anonymous):

2x^2 – x -15= 0 Now what two numbers times to give -30 and add to give -1?

OpenStudy (anonymous):

why -30?

OpenStudy (anonymous):

because a=2

OpenStudy (anonymous):

oh so 2 * -15 = - 30, okay so now the numbers are -6 and 5, rigjt?

OpenStudy (anonymous):

Perfect |dw:1326935966655:dw|

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