Simplify. 5x+y² 5x4у2 + 3xу + х³у2 - 7х²у - 3х²уа - 3ха 0 5x4y2-5x²y2-7x²y + 3xy 0 5x4y2 - 6x²y2 - 7x²y + 3xy О 5x4y2 - 5x44 - 7x²y + 3xy 0 5x4y2+9х²y2+7х2у - 3ху

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