Question

Simplify the following expression by combining like terms 9(x•x-2xy)+7x•x

Answer 1

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.