Respuesta :

Answer:

Step-by-step explanation:

Answer: 89x-18xy

9x times (x times x minus 2xy)= 9x times 9x minus 18xy

9x times 9x equals 81x

7x times x equals 8x

8x plus 81x equals 89x

Then put it back into the same question and you have 89x-18xy.

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