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OpenStudy (anonymous):
Factor: 3x^2-3x-168
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OpenStudy (anonymous):
take out the three as a common factor 3(x\[3(x ^{2} -x - 56)\] We have to find two numbers that multiply to give -56 but add to give -1 The two numbers are -8 and 7 \[3(x-8)(x+7)\]
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