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cứu mk hết voii
----- Nội dung ảnh -----
\[
\sqrt{2} - \sqrt{8}
\]

\[
\sqrt{3} - \sqrt{27} - \sqrt{8} + \sqrt{2}
\]

\[
\sqrt{8} + \sqrt{18} - \sqrt{50}
\]

\[
\sqrt{0,4} + \sqrt{2,5}
\]

\[
\left(\sqrt{18} - \sqrt{8}\right) : \sqrt{2}
\]

\[
\sqrt{12} + \sqrt{27}
\]

\[
\sqrt{12} - \sqrt{27} + \sqrt{108}
\]

\[
\sqrt{20}
\]

\[
\frac{\sqrt{75} + \sqrt{48} - \sqrt{300}}{\sqrt{5}}
\]

\[
\sqrt{2} + \sqrt{3} \cdot \sqrt{2} - \sqrt{3}
\]

\[
(1 + \sqrt{2} + \sqrt{3})(1 + \sqrt{2} - \sqrt{3})
\]

\[
(4 + \sqrt{15})(\sqrt{10} - 6)(4 - \sqrt{15})
\]

\[
\sqrt{28} : \sqrt{7}
\]

\[
(20/\sqrt{12} - 15/27) : 5\sqrt{3}
\]

\[
\sqrt{2} + 5\sqrt{8} - 2/\sqrt{50}
\]

\[
\sqrt{45} + \sqrt{80} - 105
\]

\[
\frac{\sqrt{3}}{4} + \frac{1}{\sqrt{3}} + \frac{1}{12}
\]

\[
\sqrt{32} - \sqrt{50} + \sqrt{98} - \sqrt{72}
\]