合并同类项 5x³+3x²y-10-3x²y+x³-1
3个回答
5x³+3x²y-10-3x²y+x³-1
=5x³+x³+3x²y-3x²y-10-1
=(5+1)x³+(3-3)x²y-(10+1)
=6x³-11
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