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OpenStudy (anonymous):
Factor the expression: x^2-x-12
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OpenStudy (anonymous):
I put (x+4)(x-3) and got it wrong.
OpenStudy (jadeishere):
That's because it's (x - 4)(x + 3) x^2 + 3x - 4x - 12 It's the negative sign that has to be in the right spot :) the 'x' has to be a negative and -3 + 4 = 1 -4 + 3 = -1
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