Question

Đơn giản hóa \(\dfrac{15^{30}}{45^{15}}\)

A.\(\left(\dfrac{1}{3}\right)^{15}\)   B.\(\left(\dfrac{1}{3}\right)^2\)  C.1   D.3¹⁵  E.5¹⁵

Answer 1

E nha 

\(\dfrac{15^{30}}{45^{15}}=\dfrac{5^{15}.3^{15}.15^{15}}{3^{15}.15^{15}}=5^{15}\)

Answer 2

\(\dfrac{15^{30}}{45^{15}}=\dfrac{15^{2\cdot15}}{45^{15}}=\dfrac{\left(15^2\right)^{15}}{45^{15}}=\dfrac{225^{15}}{45^{15}}=\left(\dfrac{225}{45}\right)^{15}=5^{15}\)