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体制人为啥总是那么忙? 看到一个很有意思的回答: 9-4 =3²-2² =(3+

体制人为啥总是那么忙? 看到一个很有意思的回答: 9-4 =3²-2² =(3+2)(3-2) =[(√3+√2)²-2√6](√3-√2)(√3+√2) =[(3+2√6+2)-2√6](√3-√2)(√3+√2) =(3+2√6+2-2√6)(√3-√2)(√3+√2) =5(√3-√2)(√3+√2) =(5√3-5√2)(√3+√2) =5√3√3+5√3√2-5√2√3-5√2√2 =15+30-30-10 =45-40 =5