(-1/4a³b)(-1/2a²b-1/3ab+1)计算
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(-1/4a³b)(-1/2a²b-1/3ab+1)计算(-1/4a³b)(-1/2a²b-1/3ab+1)计算(-1/4a³b)(-1/2a
(-1/4a³b)(-1/2a²b-1/3ab+1)计算
(-1/4a³b)(-1/2a²b-1/3ab+1)计算
(-1/4a³b)(-1/2a²b-1/3ab+1)计算
哟工乘法分配律
=1/8a^5b²+1/12a^4b²-1/4a³b