x/y=3/2,则分式(2x²-xy)/xy的值是

x/y=3/2,则分式(2x²-xy)/xy的值是
x/y=3/2,则分式(2x²-xy)/xy的值是

x/y=3/2,则分式(2x²-xy)/xy的值是

(2x²-xy)/xy
分子分母同时除以y²得
2[(x/y)²-(x/y)]/(x/y)
=2×[(3/2)²-(3/2)]/(3/2)
=2×(9/4-3/2)/(3/2)
=2×(3/2)/(3/2)
=2

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