[tex] \sqrt{ \frac{1}{36} - \frac{1}{100} [/tex] berapa ??

[tex] \sqrt{ \frac{1}{36} - \frac{1}{100} } \\ = \sqrt{ (\frac{1}{6}- \frac{1}{10}) (\frac{1}{6}+ \frac{1}{10}) } \\ = \sqrt{ \frac{4}{60}. \frac{16}{60} } \\ = \frac{8}{60} [/tex]

hints: Jadikan dulu bentuk selisih dua kuadrat. [tex]a^2-b^2=(a-b)(a+b)[/tex]