75x3 - 20x2 - 15x = 5x(15x2 - 4x - 3)
Find 2 integers with product = (15)(-3) = -45 and sum = -4.
(The integers are -9 and 5)
5x(15x2 - 4x - 3) = 5x(15x2 - 9x + 5x - 3)
= 5x[3x(5x - 3) + 1(5x-3)]
= 5x(5x - 3)(3x + 1)
Robert A.
asked • 12/06/18(factor by A/C method) 75x^3-20x^2-15x
Please show me the steps for A/C method.
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Robert A.
thank You12/08/18