a) \(58{\rm{ }}000{\rm{ }}000 = 5,{8.10^7}\)(km)

b) \(9{\rm{ }}460{\rm{ }}000{\rm{ }}000{\rm{ }}000 = 9,{46.10^{12}}\)(km)

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

16.32=2^4.2^5=2^9

4^2.2^2.8

\(a^n:a^m=a^{n-m}\)

\(a^n\cdot a^m=a^{n+m}\)

\(\left(a^n\right)^m=a^{n\cdot m}\)

\(\left(a\cdot b\right)^n=a^n\cdot b^n\)

\(\left(\dfrac{a}{b}\right)^n=\dfrac{a^n}{b^n}\)

cùng một cơ số*

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

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

Ta có: (-8).(-3)3.(+125)

= (-2)3 . (-3)3 . 53

= [(-2).(-3)]3.53 = 63 . 53

= (6.5)3 = 303

Ta có: 27.(-2)3.(-7).(+49)

= 33 . (-2)3 . (-7) . (-7)2

= 33 . (-2)3 . (-7)3 = [3 . (-2) . (-7)]3 = 423

(Lưu ý: 49 = (-7)) . (-7) = (-7)2

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

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

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