化简(a-b²/a)·a/a-b的结果是A.a-bB.a+bC.1/a-bD.1/a+b
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![化简(a-b²/a)·a/a-b的结果是A.a-bB.a+bC.1/a-bD.1/a+b](/uploads/image/z/13893757-61-7.jpg?t=%E5%8C%96%E7%AE%80%28a-b%26%23178%3B%2Fa%29%C2%B7a%2Fa-b%E7%9A%84%E7%BB%93%E6%9E%9C%E6%98%AFA.a-bB.a%2BbC.1%2Fa-bD.1%2Fa%2Bb)
化简(a-b²/a)·a/a-b的结果是A.a-bB.a+bC.1/a-bD.1/a+b
化简(a-b²/a)·a/a-b的结果是
A.a-b
B.a+b
C.1/a-b
D.1/a+b
化简(a-b²/a)·a/a-b的结果是A.a-bB.a+bC.1/a-bD.1/a+b
(a-b²/a)·a/a-b
=(a²-b²)/a x a/(a-b)
=(a+b)(a-b)/(a-b)
=a+b
选B
B,通分,用平方差公式,约分。