化成最简分式1.x²+xy-2y²/x²-xy-6y² 2.2xy-4/x²y²+3xy-10 3.2x²+xy-6y²/6x²-7xy-3y² 4.4-x²/xy-2y+x-2

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化成最简分式1.x²+xy-2y²/x²-xy-6y² 2.2xy-4/x²y²+3xy-10 3.2x²+xy-6y²/6x²-7xy-3y² 4.4-x²/xy-2y+x-2

化成最简分式1.x²+xy-2y²/x²-xy-6y² 2.2xy-4/x²y²+3xy-10 3.2x²+xy-6y²/6x²-7xy-3y² 4.4-x²/xy-2y+x-2
化成最简分式
1.x²+xy-2y²/x²-xy-6y² 2.2xy-4/x²y²+3xy-10 3.2x²+xy-6y²/6x²-7xy-3y² 4.4-x²/xy-2y+x-2

化成最简分式1.x²+xy-2y²/x²-xy-6y² 2.2xy-4/x²y²+3xy-10 3.2x²+xy-6y²/6x²-7xy-3y² 4.4-x²/xy-2y+x-2