Question

Answer 1

\(Bài1\\ x\le-2\\ b,x\ge4\\ c,x\ge\sqrt{3}\)

\(Bài2\\ a,\left|2\sqrt{2}-3\right|=3-2\sqrt{2}\\ b,\left|\dfrac{1}{\sqrt{2}}-\dfrac{1}{2}\right|=\dfrac{1}{\sqrt{2}}-\dfrac{1}{2}\\ c,\left|0,1-\sqrt{0,1}\right|=\sqrt{0,1}-0,1\)

\(Bài3\\ a,=\left|\sqrt{5}-\sqrt{2}\right|+\left|\sqrt{5}+\sqrt{2}\right|=\sqrt{5}-\sqrt{2}+\sqrt{5}+\sqrt{2}=2\sqrt{5}\\ b,=\left|\sqrt{2}+1\right|-\left|\sqrt{2}-5\right|=\sqrt{2}+1-\left(5-\sqrt{2}\right)=\sqrt{2}+1-5+\sqrt{2}=2\sqrt{2}-4\)

Answer 2

b chia nhỏ bài nhé.

Answer 3

Bài 1:

x ≤ -2

b) x ≥ 4

c) x ≥ √3