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Factor Using the Ac-Method $21 x^{2}-91 x-70$ A) $7(3 x+2)(x-5)$ B) $7(3 x-2)(x+5)$

Question 78

Multiple Choice

Factor using the ac-method.
- $21 x^{2}-91 x-70$

A) $7(3 x+2) (x-5)$
B) $7(3 x-2) (x+5)$
C) prime
D) $(21 \mathrm{x}+14) (\mathrm{x}-5)$

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