Question

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Answer 1

Step-by-step explanation:

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Answer 2

Answer:

8x²-2x-2y

Step-by-step explanation:

(9x²- 10x +5y) -(7y-8x+x²)

9x²-10x+5y -7y + 8x-x²[ removing the brackets and changing the sign of the second expression]

9x²-x²-10x+8x+ 5y - 7y[ combining like terms]

8x²-2x-2y [ writing the expression in increasing order of the power of x]

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