Question

Упростите выражение..

Answer 1

$(1+ sqrt{2})^2*(1- sqrt{2})^2-1 \ (1^2- sqrt{2}^2)^2-1 \ (1-2)^2-1=(-1)^2-1=1-1=0$

$(2+ sqrt{2})^2*(2- sqrt{2})^2-2 \ (2^2- sqrt{2}^2)^2-2 \ (4-2)^2-2=2^2-2=4-2=2$