Question

bài 2 : rút gọn e, \(\sqrt{\left(\sqrt{2}-1\right)^2}-3\sqrt{8}\)

Answer 1

= \(\sqrt{2}-1-6\sqrt{2}=-1-5\sqrt{2}\)

Answer 2

Bạn kia gõ bị lỗi , mình làm lại :

\(\sqrt{\left(\sqrt{2}-1\right)^2}-3\sqrt{8}=\sqrt{2}-1-6\sqrt{2}=-1-5\sqrt{2}\)

Answer 3

\(=\sqrt{2}-1-6\sqrt{2}=1-7\sqrt{2}\)

Answer 4

SORRY lam lai :\(\sqrt{\left(\sqrt{2}-1\right)^2}-3\sqrt{8}=1-\sqrt{2}-6\sqrt{2=1-7\sqrt{2}}\)