\(\frac{2^{15}.9^4}{6^7.8^2}\)
\(=\frac{2^{15}.\left(3^2\right)^4}{\left(2.3\right)^7.\left(2^3\right)^2}\)
\(=\frac{2^{15}.3^8}{2^7.3^7.2^6}\)
\(=\frac{2^{15}.3^8}{2^{13}.3^7}\)
\(=2^2.3\)
\(=12\)
_Chúc bạn học tốt_
\(\frac{2^{15}.9^4}{6^7.8^2}=\frac{2^{15}.\left(3^2\right)^4}{\left(2.3\right)^7.\left(2^3\right)^2}=\frac{2^{15}.3^8}{2^7.3^7.2^6}=\frac{2^{15}.3^8}{2^{13}.3^7}=2^2.3=12\)
\(\frac{2^{15}\cdot9^4}{6^7\cdot8^2}\)
\(=\frac{2^{15}\cdot\left(3^2\right)^4}{\left(2\cdot3\right)^7\cdot\left(2^3\right)^2}\)
\(=\frac{2^{15}\cdot3^8}{2^7\cdot3^7\cdot2^6}=\frac{2^{15}\cdot3^8}{2^{13}\cdot3^7}\)
Rút gọn => \(=2^2\cdot3=4\cdot3=12\)
hok tốt ...
215.94=215.312=2.2.2.2.2.2.2.2.2.2.2.2.2.2.3.3.3.3.3.3.3.3.3.3.3.3
67.82=6.6.6.6.6.6.8.8.
ta áp dungj cách lượcthì được:
26.36/8
64.36/8
8.36
8.729
5832
