Question

1. Thực hiện phép tính

a) \(\dfrac{2^{15}.9^3}{6^7.4^4}\)

Answer 1

\(\dfrac{2^{15}.9^3}{6^7.4^4}=\dfrac{2^{15}.\left(3^2\right)^3}{3^7.2^7.2^8}=\dfrac{2^{15}.3^6}{3^7.2^{15}}=\dfrac{3^6}{3^7}=\dfrac{1}{3}\)

Answer 2

\(\dfrac{2^{15}.9^3}{6^7.4^4}=\dfrac{2^{15}.3^6}{2^{15}.3^7}=\dfrac{1}{3}\)

Answer 3

\(\dfrac{2^{15}.9^3}{6^7.4^4}=\dfrac{2^{15}.\left(3^2\right)^3}{\left(2.3\right)^7.2^8}=\dfrac{2^{15}.3^6}{2^7.3^7.2^8}=\dfrac{3^6}{3^7}=\dfrac{1}{3}\)

Answer 4

\(\dfrac{2^{15}.9^3}{6^7.4^4}\)= \(\dfrac{2^{15}.\left(3^2\right)^3}{\left(2.3\right)^7.\left(2^2\right)^4}\)=\(\dfrac{2^{15}.3^6}{2^7.3^7.2^8}\)=\(\dfrac{2^{15}.3^6}{2^7.3^7.2^8}\)=\(\dfrac{2^{15}.3^6}{3^7.2^{15}}\)=\(\dfrac{1}{3}\)