若x+y-5xy=0,求(2x-3xy+2y)/(x+2xy+y)的值
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若x+y-5xy=0,求(2x-3xy+2y)/(x+2xy+y)的值
若x+y-5xy=0,求(2x-3xy+2y)/(x+2xy+y)的值
若x+y-5xy=0,求(2x-3xy+2y)/(x+2xy+y)的值
x+y=5xy
(2x-3xy+2y)/(x+2xy+y)
=[2(x+y)-3xy]/[(x+y)+2xy]
=(2×5xy-3xy)/(5xy+2xy)
=7xy/7xy
=1
若x+y-5xy=0则x+y=5xy
(2x-3xy+2y)/(x+2xy+y)
=(2X+2Y-3XY)/(X+Y+2XY)
=(2X+2Y)-3XY/(X+Y)+2XY
=2(X+Y)-3XY/(X+Y)+2XY
=2×5XY-3XY/5XY+2XY
=10XY-3XY/7XY
=7XY/7XY
=1