计算:1、(1+根号2)²(1+根号3)²(1-根号2)²(1-根号3)²;2、
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计算:1、(1+根号2)²(1+根号3)²(1-根号2)²(1-根号3)²;2、根号12÷(根号3-根号2)
3、(a-b)÷(根号a-根号b)
3、(a-b)÷(根号a-根号b)
![计算:1、(1+根号2)²(1+根号3)²(1-根号2)²(1-根号3)²;2、](/uploads/image/z/8343243-27-3.jpg?t=%E8%AE%A1%E7%AE%97%EF%BC%9A1%E3%80%81%281%2B%E6%A0%B9%E5%8F%B72%29%26%23178%3B%281%2B%E6%A0%B9%E5%8F%B73%29%26%23178%3B%281-%E6%A0%B9%E5%8F%B72%29%26%23178%3B%281-%E6%A0%B9%E5%8F%B73%29%26%23178%3B%EF%BC%9B2%E3%80%81)
原式=[(1+√2)(1-√2)]^2[(1+√3)(1-√3)]^2 =[1-2]^2[1-3]^2 =4原式=[√12(√3+√2)]/[(√3+√2)(√3-√2)] =√12(√3+√2) =6+2√6
再问: 第3题呢
再答: =(a-b)(√a+√b)/[(√a+√b)(√a-√b)] =(a-b)(√a+√b)/[a-b] =√a+√b
再问: 第3题呢
再答: =(a-b)(√a+√b)/[(√a+√b)(√a-√b)] =(a-b)(√a+√b)/[a-b] =√a+√b
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