=(X+2Y)(X-2Y)/(X-Y)^2乘以X(X-Y)/X-2Y
=X(X+2Y)/X-Y
4y/3x·x/2y^3= ab^2/2c^2÷-3a^2b^2/4cd
4y/3x·x/2y^3= ab^2/2c^2÷-3a^2b^2/4cd
(x^2-4y^2)/(x^2-2xy+y^2)除以x-2y/x²-xy 求求啊、、
(x^2-4y^2)/(x^2-2xy+y^2)除以x-2y/x²-xy 求求啊、、
数学人气：148 ℃时间：2019-10-19 12:01:10
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