)Subtract the sum of 3xy+ y2and 4 y2-7y fromthe sum of -6xy -8y2and 18y2-20y
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-6xy-8y²+18y²-20y-(3xy+y²+4y²-7y)
= -6xy-8y²+18y²-20y-3xy-y²-4y²+7y
= -6xy-3xy-8y²+18y²-y²-4y²-20y+7y
= -9xy+5y²-13y
Answer is -9xy+5y²-13y
May the answer will help uu!!!
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