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7x^2 - 19x - 6 = ?  A. (x - 3)(7x + 2)  B. (x + 3)(7x - 2)  C. (x - 3) (7x - 2)  D. (7x - 3)(x + 2)

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7x2 - 19x - 6 = ? 

A. (x - 3)(7x + 2) 

B. (x + 3)(7x - 2) 

C. (x - 3) (7x - 2) 

D. (7x - 3)(x + 2)

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1 Answer

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by (31.2k points)
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Best answer

7x2 - 19x - 6 

By using splitting the middle term 

= 7 x2 - 19x - 6 

= 7x2 + ( - 21 + 2)x - 6 

= 7x(x - 3) + 2(x - 3) 

= (x - 3)(7x + 2)

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