13-09-2015
Mathematics

contestada

how to factor by grouping to factor 4x^3+12^2-9x-27

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Panoyin Panoyin

13-09-2015

4x³ + 12x² - 9x - 27
4x²(x) - 4x²(3) + 9(x) - 9(3)
4x²(x - 3) + 9(x - 3)
(4x² + 9)(x - 3)

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13-09-2015

4x³+12x²-9x-27
4x²(x)+4x²(3)-9(x)-9(3)
4x²(x+3)-9(x+3)
(4x²-9)(x+3)
(2x-3)(2x+3)(x+3)

Answer Link

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