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OpenStudy (anonymous):
Factor the trinomial: 4x2 - 8x - 5 A. (2x + 1)(2x - 5) B. (4x + 1)(x - 5) C. (4x - 5)(x + 1) D. prime
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OpenStudy (amistre64):
you can always check by expanding the answers to see what matches
OpenStudy (amistre64):
it looks like the key element here is in the OI part of the fOIl method
OpenStudy (hoblos):
4x2 - 8x - 5 = 4x2 + 2x -10x -5 = 2x(2x+1) - 5(2x+1) = (2x+1)(2x-5)
OpenStudy (anonymous):
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