x+2/x-3乘x^2-6x+9/x^2-4
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x+2/x-3乘x^2-6x+9/x^2-4x+2/x-3乘x^2-6x+9/x^2-4x+2/x-3乘x^2-6x+9/x^2-4(x+2)/(x-3)×(x²-6x+9)/(x²
x+2/x-3乘x^2-6x+9/x^2-4
x+2/x-3乘x^2-6x+9/x^2-4
x+2/x-3乘x^2-6x+9/x^2-4
(x+2)/(x-3)×(x²-6x+9)/(x²-4)
=(x+2)/(x-3)×[(x-3)²]/[(x+2)(x-2)]
=(x-3)/(x-2)
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*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
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