[根号2-1分之根号2+1*（2根号2-3)]de - 知识问答

[根号2-1分之根号2+1*（2根号2-3)]de 2005次方等于多少

1个回答

[(√2-1)/( √2+1)] ×(2√2-3)
=(√2-1)² ×(2√2-3)
=(2√2+3) (2√2-3)
=8-9
= -1,
∴所求的值为-1的2005次方= -1

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