Question

Bài 1: tìm số tự nhiên n , biết 16 x 2ⁿ = 256

 

Answer 1

16 x 2ⁿ = 256 

 2ⁿ = 256 : 16 

2ⁿ = 16

2ⁿ = 2⁴

=> n = 4 

Vậy n = 4 

Answer 2

\(16\times2^n=256\Leftrightarrow2^4\times2^n=2^9\Leftrightarrow2^{4+n}=2^9\Rightarrow4+n=9\Leftrightarrow n=9-4=5\)

Answer 3

Ta có :16.2ⁿ=256

       =>2ⁿ   =256:16

      =>2ⁿ    =16

      =>2ⁿ    =2⁴

=> n=4

Vậy n=4

Answer 4

\(16\times2^n=256\)

\(\Rightarrow2^4\times2^n=256\)

\(\Rightarrow2^{4+n}=2^8\)

\(\Rightarrow4+n=8\Rightarrow n=8-4=4\)

Answer 5

\(16.2^n=256\)

\(2^n=16\)

\(n=4\)

Answer 6

16 x 2ⁿ = 256

2ⁿ = 16

2ⁿ = 2⁴

n = 4

Vậy n = 4

Answer 7

Ta có:

16*2ⁿ=256

2ⁿ=256:16=16=2⁴

ⁿ⁼⁴

Answer 8

16 x 2ⁿ = 256 

2ⁿ = 256 : 16 

2ⁿ = 16

2ⁿ = 2⁴

=> n = 4 

Hc tốt