(3x²y-xy²+2xy)÷1/2xy=?(要有过程)(3x²y-xy²+2xy)÷(1/2)xy
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(3x²y-xy²+2xy)÷1/2xy=?(要有过程)(3x²y-xy²+2xy)÷(1/2)xy
(3x²y-xy²+2xy)÷1/2xy=?(要有过程)
(3x²y-xy²+2xy)÷(1/2)xy
(3x²y-xy²+2xy)÷1/2xy=?(要有过程)(3x²y-xy²+2xy)÷(1/2)xy
把括号里的拆成三个式子,分别除以1/2xy