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对于实数a有等式“(a~2)~(1/2)=|a|”成立。此式在二次根式的化简中应用极为广泛,题型灵活多样,下面谈谈此类问题的解法。
For real a, there is an equality “(a~2)~(1/2)=|a|”. This formula is widely used in the simplification of secondary roots, and the types of questions are flexible and diverse. Let’s talk about the solution of such problems.