分式的乘除法计算题已知x-y=4xy(x,y均不为0)求,2x+3xy-2y/x-2xy-y的值
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分式的乘除法计算题已知x-y=4xy(x,y均不为0)求,2x+3xy-2y/x-2xy-y的值
分式的乘除法计算题
已知x-y=4xy(x,y均不为0)求,2x+3xy-2y/x-2xy-y的值
分式的乘除法计算题已知x-y=4xy(x,y均不为0)求,2x+3xy-2y/x-2xy-y的值
x-y=4xy
(2x+3xy-2y)/(x-2xy-y)
=[2(x-y)+3xy]/[(x-y)-2xy]
=(8xy+3xy)/(4xy-2xy)
=(11xy)/(2xy)
=11/2