@tandung154
d) `\text \frac{120^{8}}{40^{8}}`
= $(\dfrac{120}{40})^{8}$
= $3^{8}$
= 6561
e) `\text \frac{390^{4}}{130^{4}}`
= $(\dfrac{390}{130})^{4}$
= $3^{4}$
= 81
f) `\text \frac{3^{2}}{0,375^{2}}`
= $(\dfrac{3}{0,375})^{2}$
= $8^{2}$
= 64
* Xin hay nhất