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To factor:
10x2 + 27x - 28
Find two values that add up to 27, our middle coefficient, and which multiply to make -280, the product of the other two coefficients. In this case, those two values would be 35 and -8. Now break the middle term down with those two values, and factor:
= 10x2 + 35x - 8x - 28
= 5x(2x + 7) - 4(2x + 7)
= (5x - 4)(2x + 7)
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Earn +20 ptsQ: How do you factor 10x2 plus 27x - 28?
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10x2 plus 27x - 28?
(5x - 4)(2x + 7)
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5 + (10 x 2) + 8 ÷ 4 + 1 = 28
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