1.化简分式2X三次方-8X/X+2的结果是( )A.2X/X+2 B.X²-4 C.X²-4/X+2 D.2X²-4X2.如果b/a+a/b=2,则a²+ab+b²/a²-4ab+b²的值等於( )A.1 B.-1 C.3/2 D.- 3/23.已知a²+1/a=3,则a²+1/a²=___4.已
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![1.化简分式2X三次方-8X/X+2的结果是( )A.2X/X+2 B.X²-4 C.X²-4/X+2 D.2X²-4X2.如果b/a+a/b=2,则a²+ab+b²/a²-4ab+b²的值等於( )A.1 B.-1 C.3/2 D.- 3/23.已知a²+1/a=3,则a²+1/a²=___4.已](/uploads/image/z/2611802-2-2.jpg?t=1.%E5%8C%96%E7%AE%80%E5%88%86%E5%BC%8F2X%E4%B8%89%E6%AC%A1%E6%96%B9-8X%2FX%2B2%E7%9A%84%E7%BB%93%E6%9E%9C%E6%98%AF%EF%BC%88+%EF%BC%89A.2X%2FX%2B2+B.X%26sup2%3B-4+C.X%26sup2%3B-4%2FX%2B2+D.2X%26sup2%3B-4X2.%E5%A6%82%E6%9E%9Cb%2Fa%2Ba%2Fb%3D2%2C%E5%88%99a%26sup2%3B%2Bab%2Bb%26sup2%3B%2Fa%26sup2%3B-4ab%2Bb%26sup2%3B%E7%9A%84%E5%80%BC%E7%AD%89%E6%96%BC%28+%29A.1+B.-1+C.3%2F2+D.-+3%2F23.%E5%B7%B2%E7%9F%A5a%26sup2%3B%2B1%2Fa%3D3%2C%E5%88%99a%26sup2%3B%2B1%2Fa%26sup2%3B%3D___4.%E5%B7%B2)
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