Question

Tính:

5.4^15.9^9-4.3^20.8^9 / 5.2^9.6^19-7.2^29.27^6

Answer 1

Các bn giúp mk vs, mk cần gấp lắm

Answer 2

\(\frac{5.4^{15}.9^9-4.3^{20}.8^9}{5.2^9.6^{19}-7.2^{29}.27^6}\)

\(=\frac{5.2^{30}.3^{18}-2^2.3^{20}.2^{27}}{5.2^9.2^{19}.3^{19}-7.2^{29}.3^{18}}\)

\(=\frac{2^{29}.3^{18}\left(5.2-3^2\right)}{2^{28}.3^{18}\left(5.3-7.2\right)}\)

\(=\frac{2^{29}.3^{18}}{2^{28}.3^{18}}\)

\(=\frac{2^{29}}{2^{28}}\)

\(=2^1=2\)

Vậy \(\frac{5.4^{15}.9^9-4.3^{20}.8^9}{5.2^9.6^{19}-7.2^{29}.27^6}=2\)