Bài 5:
a: \(4^9:4^4=4^5\)
\(17^8:17^5=17^3\)
\(2^{10}:8^2=2^{10}:2^6=2^4\)
\(18^{10}:3^{10}=6^{10}\)
\(27^5:81^3=3^{15}:3^{12}=3^3\)
b: \(10^6:100=10^4\)
\(5^9:25^3=5^9:5^6=5^3\)
\(4^{10}:64^3=2^{20}:2^{18}=2^2\)
\(2^{25}:32^4=2^{25}:2^{20}=2^5\)
\(18^4:9^4=2^4\)
Bài 3:
a) \(4^8.2^{20}=\left(2^2\right)^8.2^{20}=2^{36}\)
\(9^{12}.27^5.81^4=\left(3^2\right)^{12}.\left(3^3\right)^5.\left(3^4\right)^4=3^{55}\)
\(64^3.4^5.16^2=\left(2^6\right)^3.\left(2^2\right)^5.\left(2^4\right)^2=2^{36}\)
b) \(25^{20}.125^4=5^{40}.5^{12}=5^{52}\)
\(x^7.x^4.x^3=x^{14}\)
\(3^6.4^6=\left(3.4\right)^6=12^6\)
c)\(8^4.2^3.16^2=2^{12}.2^3.2^8=2^{23}\)
\(2^3.2^2.8^3=2^3.2^2.2^9=2^{14}\)
\(y.y^7=y^8\)
