化简(x平方-4x+4分之x平方-4)+(x+2分之2-X)

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化简(x平方-4x+4分之x平方-4)+(x+2分之2-X)
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化简(x平方-4x+4分之x平方-4)+(x+2分之2-X)
化简(x平方-4x+4分之x平方-4)+(x+2分之2-X)

化简(x平方-4x+4分之x平方-4)+(x+2分之2-X)
原式=(x-2)²分之(x+2)(x-2)-(x+2)分之(x-2)
=(x-2)分之(x+2)-(x+2)分之(x-2)
=(x+2)(x-2)分之(x²+4x+4-x²+4x-4)
=(x²-4)分之8x

=(x+2)(x-2)/(x-2)²-(x-2)/(x+2)
=(x+2)/(x-2) -(x-2)/(x+2)
=[(x+2)²-(x-2)²]/(x+2)(x-2)
=8x/(x²-4)