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02-05-2020
Mathematics

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2.) LaTeX: x^2-5x-84 pls help

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02-05-2020

Answer:

(x-12)(x+7)

Step-by-step explanation:

x^2 - 5x - 84

You find the factors of 84:

1,84; 2,42; 3,28; 4,21; 6,14; 7,12

7 and 12 are 5 apart, so we use them:

(x - 12)(x + 7)

The 12 is negative because it's greater than 7, and the coefficient of x is negative 5.

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