2次根式计算(√2+1)(3-2√2)/√2-1

问题描述:

2次根式计算(√2+1)(3-2√2)/√2-1

(√2+1)(3-2√2)/√2-1
=(√2+1)^2(3-2√2)
=(3+2√2)(3-2√2)
=9-8
=1