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  • 24-10-2020
  • Mathematics
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a. 3x 2 - 11x - 4 =0

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sistersayiaka
sistersayiaka sistersayiaka
  • 24-10-2020

Answer:

(3x +1)(x-4)

Step-by-step explanation:

Factor using the a × c method.

3x² - 11x - 4 = 0

ac = (-12)

Factors that multiply to (-12) but add to (-11): -12 and +1.

New equation: 3x² - 12x + 1x - 4 = 0

Factor as follows:

3x² - 12x = 3x(x-4)

1x - 4 = 1(x-4)

Combine the outside numbers with the inside quantity.

= (3x+1)(x-4)

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