9x+10x²y-4xy,-6x³+6xy+9-12yx²
find the sum
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Answer:
-2x²y + 2xy + 9 - 6x³
Step-by-step explanation:
9x + 10x²y - 4xy - 6x³ + 6xy + 9 - 12yx²
10x²y - 12yx²- 4xy + 6xy + 9 - 6x³
-2x²y + 2xy + 9 - 6x³
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