a) \(2^3.3^2=8.9=72\)

b) \(5^{10}:5^7=5^2=25\)

c) \(2^6:2=2^5=32\)

d) \(7^4:7^4=7^0=1\)

e) \(9^5:9^5=9^0=1\)

a) $2^3.3^2=8.9=72$

b) $5^{10}:5^7=5^2=25$

c) ${}^5$

32

d) $1$

e) $1$

bằng 0 đún ko

823543 nhé

   Ta có             \(2^{13}.5^8.10\\ \\ =2^8.2^5.5^8.10\\ \\ =\left(2^8.5^8\right).2^5.10\\ \\ =10^8.10.32\\ \\ =10^9.32\\ \\ =32000000000\)⇒  \(2^{13}.5^8.10\) có 11 chữ số

\(a=2^{13}.5^8.10\)

\(a=2^8.2^5.5^8.10\)

\(a=\left(2^8.5^8\right).2^5.10\)

\(a=\left(2.5\right)^8.32.10\)

\(a=10^8.32.10\)

\(a=1000...0\left(8cs0\right).10.32\)

\(a=1000...0\left(9cs0\right).32\)

\(a=32000...0\left(9cs0\right)\)

\(\Rightarrow a\) có 11 chữ số

2^0 x 2^9 : 8 

= 1 x 512 : 8 

= 64

nha bạn 

Bằng 64

64 nha bn

2^0.2^9:2^3

=2^9:2^3

=2^6=64

 k mik nha

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\(\dfrac{1}{2}.2^n+4.2^n=9.5^n\)

\(2^n\left(\dfrac{1}{2}+4\right)=9.5^n\)

\(2^n.\dfrac{9}{2}=9.5^n\)

Bạn xem thử xem có sai đề bài không ạ

\(2^{x+1}=4=2^2\Rightarrow x+1=2\Rightarrow x=1\)

\(2^{x-1}=4=2^2\Rightarrow x-1=2\Rightarrow x=3\)

\(2^x.4=128=4.32=4.2^5\Rightarrow x=5\)

\(3^{x-2}.9=81=9.9=9.3^2\Rightarrow x-2=2\Rightarrow x=4\)

\(\frac{3^{x+1}}{9}=3\Rightarrow3^{x+1}=27=3^3\Rightarrow x=2\)

\(41-2^x=9\Rightarrow2^x=41-9=32=2^5\Rightarrow x=5\)

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