\(16.32=2^4.2^5=2^9\)

16.32=2^4.2^5=2^9

4^2.2^2.8

\(9^2=\left(3^2\right)^2=3^{2\cdot2}=3^4\)

(\(\dfrac{1}{9}\))² = (\(\dfrac{1^2}{3^2}\))²= ((\(\dfrac{1}{3}\))²)²=  (\(\dfrac{1}{3}\))⁴

3^6 . 9^5

= 3^6. \(^{\left(3^2\right)^5}\)

= 3^6. 3^10

=\(^{3^{6+10}}\)

= 3^16

k nhé ( dấu " ^"  là đấu mũ)

3^6 x 9^5 = 3^6 x ( 3^2)^5 = 3^6 x 3^10 = 3^16

3^6.9^5=3^6.(3²)^5=3^6.3^10=3¹⁰⁺⁶=3¹⁶

\(0,001=\frac{1}{1000}=\frac{1}{10^3}=10^{-3}\)

\(0,0001=\frac{1}{10000}=\frac{1}{10^4}=10^{-4}\)

\(0,00015=\frac{3}{20000}=\frac{3}{2}\times\frac{1}{10000}=\frac{3}{2}\times\frac{1}{10^4}=\frac{3}{2}\times10^{-4}\)

\(5^{-a}=\frac{1}{5^a}\)

\(3,5\times10^{-5}=3,5\times\frac{1}{10^5}\)

\(\left(\frac{2}{3}\right)^{-2}==\frac{1}{\left(\frac{2}{3}\right)^2}=\left(\frac{3}{2}\right)^2\)

\(10^{-3}=\frac{1}{10^3}=\frac{1}{1000}\)

25 = 251 = 52=(-5)2

\(\left(0,25\right)^8=\left[\left(0,5\right)^2\right]^8=\left(0,5\right)^{2.8}=\left(0,5\right)^{16}\)

\(\left(0,125\right)^4=\left[\left(0,5\right)^3\right]^4=\left(0,5\right)^{3.4}=\left(0,5\right)^{12}\)

\(\left(0,0635\right)^2=\left[\left(0,5\right)^3\right]^2=\left(0,5\right)^{3.2}=\left(0,5\right)^6\)

cùng một cơ số*

\(6^{15}\cdot6^2=6^{17}\\ 3^{14}\cdot2^{14}=\left(3\cdot2\right)^{14}=6^{14}\\ 2^{11}\cdot6^3\cdot3^{11}=\left(2\cdot3\right)^{11}\cdot6^3=6^{11}\cdot6^3=6^{14}\\ 6^2\cdot6^7=6^{13}\\ \left(6^3\right)^4=6^{3\cdot4}=6^{12}\\ 6^{2^3}=6^8\)

8=2^3 
16=4^2 
27=3^3 
64=8^2 
81=9^2 
100=10^2 
vay cac so co dang luy thua cua 1 so tu nhien lon hon 1 la :8 , 16 , 27 , 64, 81 , 100.

các số dạng lũy thừa của 1 số tự nhiên lớn hơn 1 là:8,16,27,64,81,100

Tính : 10^{2 ;}