2 years ago

Write the expression 5x(x + 9) − 7(x + 9) in complete factored form.

1 answer:

4 0

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.

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