17-11-2015
Mathematics

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express as a trinomial: (2x+10)(x-9)

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Panoyin Panoyin

17-11-2015

(2x + 10)(x - 9)
2x(x - 9) + 10(x - 9)
2x(x) - 2x(9) + 10(x) - 10(9)
2x² - 18x + 10x - 90
2x² - 8x - 90

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