同类项一道题将(x-y)当做一个因式,合并(x-y )的平方+3(x-y)-2(y-x)的平方等于() A.-(x-y)的平方+3(x-y) B.2(x-y)的平方 C.2(x-y) D.以上答案都不对
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![同类项一道题将(x-y)当做一个因式,合并(x-y )的平方+3(x-y)-2(y-x)的平方等于() A.-(x-y)的平方+3(x-y) B.2(x-y)的平方 C.2(x-y) D.以上答案都不对](/uploads/image/z/6956195-59-5.jpg?t=%E5%90%8C%E7%B1%BB%E9%A1%B9%E4%B8%80%E9%81%93%E9%A2%98%E5%B0%86%28x-y%29%E5%BD%93%E5%81%9A%E4%B8%80%E4%B8%AA%E5%9B%A0%E5%BC%8F%2C%E5%90%88%E5%B9%B6%28x-y+%29%E7%9A%84%E5%B9%B3%E6%96%B9%2B3%28x-y%29-2%28y-x%29%E7%9A%84%E5%B9%B3%E6%96%B9%E7%AD%89%E4%BA%8E%EF%BC%88%EF%BC%89+A.-%EF%BC%88x-y%EF%BC%89%E7%9A%84%E5%B9%B3%E6%96%B9%2B3%28x-y%29+B.2%28x-y%29%E7%9A%84%E5%B9%B3%E6%96%B9+C.2%EF%BC%88x-y%EF%BC%89+D.%E4%BB%A5%E4%B8%8A%E7%AD%94%E6%A1%88%E9%83%BD%E4%B8%8D%E5%AF%B9)
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同类项一道题将(x-y)当做一个因式,合并(x-y )的平方+3(x-y)-2(y-x)的平方等于() A.-(x-y)的平方+3(x-y) B.2(x-y)的平方 C.2(x-y) D.以上答案都不对
同类项一道题
将(x-y)当做一个因式,合并(x-y )的平方+3(x-y)-2(y-x)的平方等于()
A.-(x-y)的平方+3(x-y) B.2(x-y)的平方 C.2(x-y) D.以上答案都不对
同类项一道题将(x-y)当做一个因式,合并(x-y )的平方+3(x-y)-2(y-x)的平方等于() A.-(x-y)的平方+3(x-y) B.2(x-y)的平方 C.2(x-y) D.以上答案都不对
D.以上答案都不对