((根号2-2)(1-根号2)+1))(根号2-1)计算
问题描述:
((根号2-2)(1-根号2)+1))(根号2-1)计算
答
((根号2-2)(1-根号2)+1))(根号2-1)
=(√2-2-2+2√2+1)(√2-1)
=(3√2-3)(√2-1)
=3(√2-1)²
=3(2-2√2+1)
=9-6√2
如果本题有什么不明白可以追问,
另外发并点击我的头像向我求助,请谅解,