1、已知a-b=-2,ab=-2,则2分之一a(的3次方)-(ab)两次方+二分之一aX(b的三次方)的值是( )A.2 B.-2 C.4 D.-42已知正方形的面积为9X(x的2次方)+6x+1(X大于0),利用因式分解,该正方形的边长可用代
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![1、已知a-b=-2,ab=-2,则2分之一a(的3次方)-(ab)两次方+二分之一aX(b的三次方)的值是( )A.2 B.-2 C.4 D.-42已知正方形的面积为9X(x的2次方)+6x+1(X大于0),利用因式分解,该正方形的边长可用代](/uploads/image/z/764680-40-0.jpg?t=1%E3%80%81%E5%B7%B2%E7%9F%A5a-b%3D-2%2Cab%3D-2%2C%E5%88%992%E5%88%86%E4%B9%8B%E4%B8%80a%28%E7%9A%843%E6%AC%A1%E6%96%B9%EF%BC%89-%EF%BC%88ab%EF%BC%89%E4%B8%A4%E6%AC%A1%E6%96%B9%2B%E4%BA%8C%E5%88%86%E4%B9%8B%E4%B8%80aX%EF%BC%88b%E7%9A%84%E4%B8%89%E6%AC%A1%E6%96%B9%EF%BC%89%E7%9A%84%E5%80%BC%E6%98%AF%EF%BC%88+%EF%BC%89A.2+B.-2+C.4+D.-42%E5%B7%B2%E7%9F%A5%E6%AD%A3%E6%96%B9%E5%BD%A2%E7%9A%84%E9%9D%A2%E7%A7%AF%E4%B8%BA9X%EF%BC%88x%E7%9A%842%E6%AC%A1%E6%96%B9%EF%BC%89%2B6x%2B1%28X%E5%A4%A7%E4%BA%8E0%EF%BC%89%2C%E5%88%A9%E7%94%A8%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%2C%E8%AF%A5%E6%AD%A3%E6%96%B9%E5%BD%A2%E7%9A%84%E8%BE%B9%E9%95%BF%E5%8F%AF%E7%94%A8%E4%BB%A3)
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