(1)2xy²+x²y-xy=xy*________(2)a的n次方+a的n+2次方+a的2n次方=a的n次方=________
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![(1)2xy²+x²y-xy=xy*________(2)a的n次方+a的n+2次方+a的2n次方=a的n次方=________](/uploads/image/z/2523777-33-7.jpg?t=%EF%BC%881%EF%BC%892xy%26%23178%3B%2Bx%26%23178%3By-xy%3Dxy%2A________%EF%BC%882%EF%BC%89a%E7%9A%84n%E6%AC%A1%E6%96%B9%2Ba%E7%9A%84n%2B2%E6%AC%A1%E6%96%B9%2Ba%E7%9A%842n%E6%AC%A1%E6%96%B9%3Da%E7%9A%84n%E6%AC%A1%E6%96%B9%3D________)
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(1)2xy²+x²y-xy=xy*________(2)a的n次方+a的n+2次方+a的2n次方=a的n次方=________
(1)2xy²+x²y-xy=xy*________(2)a的n次方+a的n+2次方+a的2n次方=a的n次方=________
(1)2xy²+x²y-xy=xy*________(2)a的n次方+a的n+2次方+a的2n次方=a的n次方=________
(1)2xy²+x²y-xy=xy*(2y+x-1)
(2)a的n次方+a的n+2次方+a的2n次方=a的n次方(1+a²+2的n次方)