Question

\(\dfrac{5^4.20^4}{25^5.4^5}\)

Answer 1

Đề bài là gì vậy ( rút gọn hả?)

Answer 2

\(\dfrac{5^4.20^4}{25^5.4^5}=\dfrac{25^2\left(5.4\right)^4}{25^5.4^5}=\dfrac{1.5^4.4^4}{25^3.4^5}=\dfrac{25^2.1}{25^3.4}=\dfrac{1}{25.4}=\dfrac{1}{100}\)

Answer 3

\(\dfrac{5^4.20^4}{25^5.4^5}=\dfrac{5^4.\left(5.4\right)^4}{\left(5^2\right)^5.4^5}=\dfrac{5^4.5^4.4^4}{5^{10}.4^5}=\dfrac{5^8.4^8}{5^{10}.4^5}=\dfrac{1.1}{5^2.4}=\dfrac{1}{100}\)

Answer 4

\(\dfrac{5^4.20^4}{25^5.4^5}=\dfrac{5^4.\left(5.4\right)^4}{\left(5^2\right)^5.4^5}=\dfrac{5^4.5^4.4^4}{5^{10}.4^5}=\dfrac{5^8.4^8}{5^{10}.4^5}=\dfrac{1}{5^2.4}=\dfrac{1}{100}\)

Answer 5

hình như đề bài là tính nhanh đó