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Solve 8x2 + 7x - 15 = - 7.
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Solve 8x2 + 7x - 15 = - 7.

User Audeoudh
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step by ... 8*x^2+7*x-15-(-7)=0 ... 3.2Solving 8x2+7x-8 = 0 by Completing The Square .
User Manuel M
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