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Earn +20 ptsQ: What is the factor x2 plus x minus 42?
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Factor by grouping x3 - x2 plus 40x -40?
(x2 plus 40) (x minus 1)
How do you factor -x2 plus x plus 42?
-x2 + x + 42 = -[x2 - x - 42] = -[x2 - 7x + 6x - 42] = -[x*(x - 7) + 6*(x - 7)] = -(x - 7)*(x + 6)
Factor x2 plus x - 42?
44
How do you factor x2 plus 7x minus 6?
This is not factorable. You would have to do the quadratic formula for this problem.
How do you factor the polynomial x2 minus 19x plus 84?
(x - 12)(x - 7)
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