Question

factories: x - 9 + 9yz - xyz​

Answer 1

Answer:

(x - 9)(1 - yz)

Step-by-step explanation:

By regrouping, we have

  x - 9 + 9zy - xyz = x - 9 - xyz + 9zy

                         = 1(x - 9) - yz(x - 9)

                         = (x - 9)(1 - yz)

                         = (x - 9)(1 - yz)

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