9^8:3^2=9^8:9=9^7 

9^8=43046721

3^2=9

k mk nha!

9⁸:3²

=9⁸:9

=9⁷

^{tk nha~~~~~~~~~~~~~~~~~}

thanks

8⁵.2³=(2³)⁵.2³=2¹⁵.2³=2¹⁵⁺³=2¹⁸

\(a,3^4.3^5=3^{4+5}=3^9\\ b,12^8:12=12^{8-1}=12^7\\ c,4.8^6.2.8^3=\left(4.2\right).\left(8^6.8^3\right)=8.8^{6+3}=8.8^9=8^{1+9}=8^{10}\)

\(a.3^4.3^5=3^9\)

\(b.12^8:12=12^7\)

\(c.4.8^6.2.8^3\)

\(=\left(4.2\right)8^6.8^3\)

\(=8.8^6.8^3=8^{10}\)

\(2^4.8=2^4.2^2=2^6=64\)

Sorry Tui nhầm .. 

\(2^4.8=2^4.2^3=2^7=124\)

2.4.8

=2\(^1\).2\(^2\).2\(^3\)

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

=2\(^6\)

=64

\(9^8:3^2\)

\(=\left(3^2\right)^8:3^2\)

\(=3^{16}:3^2\)

\(=3^{14}\)

9^8:3^2

= (3^2)^8 : 3^2

= 3^16 : 3^2

=3^14

\(9^8:3^2=\left(3^2\right)^8:3^2=3^{16}:3^2=3^{\left(16-2\right)}\)

---Học tốt---

\(8^5.2^3=\left(2^3\right)^5.2^3\)

\(=2^{15}.2^3=2^{15+3}=2^{18}\)

\(8^5\) x \(2^3\) = \(8^5\)x  \(8\) = \(8^6\)

512²

ok

a) \(3^3 : 3^2\)=\(3^{3-2}=3^1\)

b) \(5^{4} : 5^{2}\)=\(5^{4-2}=5^2\)

c) \(8^{3} . 8^{2}\)=\(8^{3+2}=8^5\)

d) Cách 1:

\(5^{4} . 5^{3}: 5^{2}=5^{4+3}:5^2=5^7:5^2=5^{7-2}=5^5\)

Cách 2: 

\(5^{4} . 5^{3}: 5^{2}=5^{4+3-2}=5^5\)

\(8^5.2^3:2^4\)

\(=\left(2^3\right)^5.2^3:2^4\)

\(=2^{15}.2^3:2^4\)

\(=2^{18}:2^4=2^{14}=16384\)

 8⁵.2³:2⁴

= ( 2³)⁵ . 2³ : 2⁴

= 2¹⁵ . 2³ : 2⁴

= 2¹⁸ : 2⁴

= 2¹⁴

Hok tốt !