计算(2a+1/3b)(1/3b-1/2a)
1个回答
(2a+1/3b)(1/3b-1/2a)
=2a*1/3b-2a*1/2a+1/3b*1/3b-1/3b*1/2a
=2a/3b-1+1/9b^2-1/(6ab)
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