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Plz help..................
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Feb 1, 2018
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Plz help..................
Mathematics
high-school
Rui Wang
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first multiply the contents of the second bracket by d then do the same procees using - 3
(d - 3)(d + 9)
= d^2 + 9d - 3d - 27
= d^2 + 6d - 27
Pisomojado
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Feb 8, 2018
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