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OpenStudy (anonymous):
factor 2x^2-x-28
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OpenStudy (anonymous):
(2x-7)(x-4) ?
jhonyy9 (jhonyy9):
x_1,_2=(1+/- sqrt(1+224))/4 =(1+/- 15)/4 = -14/4 = -7/2 and 16/4 = 4 (2x+7)(x-4)
hero (hero):
2x^2-x-28 2x^2-8x+7x-28 2x(x-4)+7(x-4) (x-4)(2x+7)
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