Question

Giups mk câu này nhé !

4^5 x 9 ^4 - 2x 6^9   /     2^ 10 x 3^8 +6 ^ 8 x 20

Answer 1

\(\frac{4^5\cdot9^42\cdot6^9}{2^{10}\cdot3^8+6^8\cdot20}\)

\(=\frac{\left(2^2\right)^5\cdot\left(3^2\right)^4-2\cdot\left(2.3\right)^9}{2^{10}\cdot3^8+\left(2.3\right)^8\cdot2^2.5}\)

\(=\frac{2^{10}\cdot3^8-2^{10}\cdot3^9}{2^{10}\cdot3^8+2^{10}\cdot3^8\cdot5}\)

\(=\frac{2^{10}\left(3^8-3^9\right)}{2^{10}\cdot\left(3^8+3^8\cdot5\right)}=\frac{2^{10}\cdot\left(-13122\right)}{2^{10}\cdot39366}=\frac{-13122}{39366}=-\frac{1}{3}\)