1、已知(x=2/x)两次方=5,则(x+2/x)的两次方=2、计算题.(x-1)的两次方-4/(x+1)的2次方÷x的两次方-9/x的2次方+x3、2a2-18/a(a+3)-2(a+3)÷(a-3)·a(a-3)+2(3-a)/a2-6a+94、通常购买同一种且其他方面品质也相
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![1、已知(x=2/x)两次方=5,则(x+2/x)的两次方=2、计算题.(x-1)的两次方-4/(x+1)的2次方÷x的两次方-9/x的2次方+x3、2a2-18/a(a+3)-2(a+3)÷(a-3)·a(a-3)+2(3-a)/a2-6a+94、通常购买同一种且其他方面品质也相](/uploads/image/z/2989112-32-2.jpg?t=1%E3%80%81%E5%B7%B2%E7%9F%A5%EF%BC%88x%3D2%2Fx%29%E4%B8%A4%E6%AC%A1%E6%96%B9%3D5%2C%E5%88%99%EF%BC%88x%2B2%2Fx%29%E7%9A%84%E4%B8%A4%E6%AC%A1%E6%96%B9%3D2%E3%80%81%E8%AE%A1%E7%AE%97%E9%A2%98.%EF%BC%88x-1%29%E7%9A%84%E4%B8%A4%E6%AC%A1%E6%96%B9-4%2F%28x%2B1%29%E7%9A%842%E6%AC%A1%E6%96%B9%C3%B7x%E7%9A%84%E4%B8%A4%E6%AC%A1%E6%96%B9-9%2Fx%E7%9A%842%E6%AC%A1%E6%96%B9%2Bx3%E3%80%812a2-18%EF%BC%8Fa%28a%2B3%29-2%28a%2B3%29%C3%B7%28a-3%29%C2%B7a%28a-3%29%2B2%283-a%29%EF%BC%8Fa2-6a%2B94%E3%80%81%E9%80%9A%E5%B8%B8%E8%B4%AD%E4%B9%B0%E5%90%8C%E4%B8%80%E7%A7%8D%E4%B8%94%E5%85%B6%E4%BB%96%E6%96%B9%E9%9D%A2%E5%93%81%E8%B4%A8%E4%B9%9F%E7%9B%B8)
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