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OpenStudy (anonymous):
Solve: 2x2 – x = 15 Can someone help me on how to solve this?
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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?
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OpenStudy (anonymous):
Perfect |dw:1326935966655:dw|
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