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OpenStudy (anonymous):
is x^2+3x-28=0 equal to x=-7 or x-4
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OpenStudy (anonymous):
x^2 + 3x- 28 = 0 x^2 +7x - 4x - 28 = 0 x(x+7) - 4(x+7) = 0 (x-4)(x+7) = 0 hence x = -4 or x= - 7
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