﹙2x²y＋3xy²﹚－﹙6x²y－3xy²﹚

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﹙2x²y＋3xy²﹚－﹙6x²y－3xy²﹚
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﹙2x²y＋3xy²﹚－﹙6x²y－3xy²﹚
﹙2x²y＋3xy²﹚－﹙6x²y－3xy²﹚

﹙2x²y＋3xy²﹚－﹙6x²y－3xy²﹚
﹙2x²y＋3xy²﹚－﹙6x²y－3xy²﹚
=2x²y＋3xy²－6x²y+3xy²
=-4x²y+6xy²

﹙2x²y＋3xy²﹚－﹙6x²y－3xy²﹚
=2x²y＋3xy²－6x²y+3xy²
=-4x²y+6xy²
祝学习进步，望采纳~~

﹙2x²y＋3xy²﹚－﹙6x²y－3xy²﹚
=2x²y＋3xy²－6x²y+3xy²
=(2x²y－6x²y)＋(3xy²+3xy²)
=-4x²y+6xy²