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OpenStudy (anonymous):
Solve. 2x^2 + x = 15.
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OpenStudy (anonymous):
use -b formula, where a=2 b=1 and c=-15,
OpenStudy (radar):
Factor (x+3)(2x-5)=0
OpenStudy (anonymous):
2x^2 + x - 15 = 0 2x^2 +3x - 5x - 15 = 0 2x(x +3 ) - 5(x + 3) = 0 (2x - 5 )(x + 3) = 0
OpenStudy (anonymous):
x = 5/2 . -3
OpenStudy (anonymous):
x = 5/2 and x = -3
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OpenStudy (anonymous):
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