tolong jawab bantu saya besok dikumpul

[tex]12) \sqrt{125} = \sqrt{ {5}^{3} } = {5}^{ \frac{3}{2} } \\ 13) {27}^{ \frac{5}{6} } = {3}^{3 \times \frac{5}{6} } = {3}^{ \frac{5}{2} } = \sqrt{ {3}^{5} } = \sqrt{243} \\14) luas = \frac{1}{ \sqrt{3} + 1} .\frac{1}{ \sqrt{3} + 1} \\ = \frac{1}{(3 + 1)} \\ = \frac{1}{4} \\ keliling =4.\frac{1}{ \sqrt{3} + 1} \\ = \frac{4}{ \sqrt{3} + 1 } x\frac{ \sqrt{ 3 } - 1 }{ \sqrt{3} - 1 } \\ = \frac{4( \sqrt{3} - 1)}{(3 - 1)} \\ = 2( \sqrt{3} - 1)[/tex]
jdikan yg trbaik jawabannya dan ikuti saaya yh...