(2x+1)*(3x-4)*(x+5)

Inactive Tutor answered • 09/05/14

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Start by multiplying the first two binomials using the FOIL method. Then multiply your answer by the third binomial.

(2x + 1)(3x - 4) = 6x² -8x +3x - 4 = 6x² -5x -4

(6x² -5x - 4)(x + 5) = 6x³ + 30x² -5x² -25x -4x -20 = 6x³ +25x² -29x - 20

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(2x+1)(3x-4)(x+5)