9(x+y)^2-6(x+y)+1进行因式分解
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9(x+y)^2-6(x+y)+1进行因式分解
![9(x+y)^2-6(x+y)+1进行因式分解](/uploads/image/z/2704447-55-7.jpg?t=9%28x%2By%29%5E2-6%28x%2By%29%2B1%E8%BF%9B%E8%A1%8C%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3)
9(x+y)^2-6(x+y)+1
=【3(x+y)-1】²
=【3(x+y)-1】²
9(x+y)^2-6(x+y)+1进行因式分解
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