1. From the sum of 15x²y+3xy²and-x²y+6xy²subtract 11x²y-20xy².
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Answer:
-7x²y+29xy²
Step-by-step explanation:
5x²y+3xy²and-x²y+6xy²subtract 11x²y-20xy².
5x²y+3xy²+(-x²y+6xy²)-(11x²y-20xy²)
= 5x²y+3xy²-x²y+6xy²-11x²y+20xy²
=-7x²y+29xy²
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