计算:x^2-(x+2)(x-2)-(x+1/x)^2
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计算:x^2-(x+2)(x-2)-(x+1/x)^2计算:x^2-(x+2)(x-2)-(x+1/x)^2计算:x^2-(x+2)(x-2)-(x+1/x)^2x^2-(x+2)(x-2)-(x+1
计算:x^2-(x+2)(x-2)-(x+1/x)^2
计算:x^2-(x+2)(x-2)-(x+1/x)^2
计算:x^2-(x+2)(x-2)-(x+1/x)^2
x^2-(x+2)(x-2)-(x+1/x)^2=2-X^2-1/(X^2)
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