计算:1/x+2÷(1/x-2-1/x+2)÷4/2-x
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计算:1/x+2÷(1/x-2-1/x+2)÷4/2-x计算:1/x+2÷(1/x-2-1/x+2)÷4/2-x计算:1/x+2÷(1/x-2-1/x+2)÷4/2-x=1/(x+2)÷(x+2-x+
计算:1/x+2÷(1/x-2-1/x+2)÷4/2-x
计算:1/x+2÷(1/x-2-1/x+2)÷4/2-x
计算:1/x+2÷(1/x-2-1/x+2)÷4/2-x
=1/(x+2)÷(x+2-x+2)/(x+2)9x-2)×(2-x)/4
=1/(x+2)×(x+2)(x-2)/4×(2-x)/4
=-1
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