1.X³+AX-2X²-2AX2.(x-z)²+4(y-x)(x-y)3.12X²-40X-18924.已知A²+AB-2B²=13,求整数A,B的值5.A(A-1)-(A²-B)6.X²-XY-5X+5Y
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![1.X³+AX-2X²-2AX2.(x-z)²+4(y-x)(x-y)3.12X²-40X-18924.已知A²+AB-2B²=13,求整数A,B的值5.A(A-1)-(A²-B)6.X²-XY-5X+5Y](/uploads/image/z/7608291-51-1.jpg?t=1.X%26%23179%3B%2BAX-2X%26%23178%3B-2AX2.%EF%BC%88x-z%29%26%23178%3B%2B4%28y-x%29%28x-y%293.12X%26%23178%3B-40X-18924.%E5%B7%B2%E7%9F%A5A%26%23178%3B%2BAB-2B%26%23178%3B%3D13%2C%E6%B1%82%E6%95%B4%E6%95%B0A%2CB%E7%9A%84%E5%80%BC5.A%EF%BC%88A-1%29-%28A%26%23178%3B-B%296.X%26%23178%3B-XY-5X%2B5Y)
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