Question

[Trần Phúc An]

Căn bậc 2 của 11 phần 540

Answer 1

[HT.Phong (9A5)]

\(\sqrt{\dfrac{11}{540}}\)

\(=\dfrac{\sqrt{11}}{\sqrt{540}}\)

\(=\dfrac{\sqrt{11}}{\sqrt{6^2\cdot15}}\)

\(=\dfrac{\sqrt{11}}{6\sqrt{15}}\)

\(=\dfrac{\sqrt{11}\cdot\sqrt{15}}{6\sqrt{15}\cdot\sqrt{15}}\)

\(=\dfrac{\sqrt{165}}{6\cdot15}\)

\(=\dfrac{\sqrt{165}}{90}\)