oliviawill4 oliviawill4

17-09-2018
Mathematics

contestada

solve and explain steps, please
4x³ + 12x² - 9x - 27 = 0

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Аноним Аноним

17-09-2018

4x^3 + 12x^2 - 9x - 27 = 0

x^2 (x + 3) - 9 (x + 3) = 0

(square root x^2 - square root 9) (x +3) = 0

x = -3; x = -3

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