根号五减去根号五分之一的详细过程
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5^(1/2)-(1/5)^(1/2)
=5^(1/2)-(5/5*5)^(1/2)
=5^(1/2)-(5)^(1/2)/5
=5^(1/2)-(1/5)*(5)^(1/2)
=(4/5)*(5)^(1/2)
=5^(1/2)-(5/5*5)^(1/2)
=5^(1/2)-(5)^(1/2)/5
=5^(1/2)-(1/5)*(5)^(1/2)
=(4/5)*(5)^(1/2)
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