tolong bantu no 6 pakai cara

[tex] ({7}^{ \frac{2}{5} } ) {}^{ \frac{1}{4} } \\ = {7}^{ \frac{2}{5} \times \frac{1}{4} } \\ = {7}^{ \frac{2}{20} } \\ = {7}^{ \frac{1}{10} } [/tex]

[tex]{7}^{ \frac{2}{5} \times \frac{1}{4} } = {7}^{ \frac{1}{10} } [/tex]
(b)