Write the expression 5x(x + 9) − 7(x + 9) in complete factored form. A. (x + 9)(x + 9) B. (5x − 7)(x + 9) C. (5x − 7)(x + 9)(x + 9) D. (5x2 + 45x)(-7x − 63)

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Erik Bergstedt · Answer 1 · 2023-07-17T02:22:14+0000

B. (5x-7)(x+9)
This method of factoring is grouping. You could take (x+9) out of both the 5x and the -7, and the next step is putting the 5x -7 in its own set of parentheses.

Write the expression 5x(x + 9) − 7(x + 9) in complete factored form. A. (x + 9)(x + 9) B. (5x − 7)(x + 9) C. (5x − 7)(x + 9)(x + 9) D. (5x2 + 45x)(-7x − 63)

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