13-09-2017
Mathematics

contestada

How do you factor: 12x^2-4x-40

Respuesta :

kphung76127 kphung76127

16-09-2017

First factor the gcf out
4(3x^2-x-10)

From here use slip and slide for the inner trinomial
x^2-x-30
(x-6)(x+5)
(x-6/3)(x+5/3)
(x-2)(3x+5)

Final answer: 4(3x+5)(x-2)

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