问题描述:
计算:3a(a²-2a+1)-2a²(a-3) (2x-3y)(x+y)
(-3/1a²b)²*(-3ab²)的4次方
3a(a²-2a+1)-2a²(a-3)
-2xy²*(-3x²y)-xy(6x²y²-x²y+xy²)
(-3/1a²b)²*(-3ab²)的4次方
3a(a²-2a+1)-2a²(a-3)
-2xy²*(-3x²y)-xy(6x²y²-x²y+xy²)
问题解答:
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