Question

2^{n +2}.2=64

Answer 1

\(2^{n+2}.2=64\)

\(\Rightarrow2^{n+2}=32\)

\(\Rightarrow2^n.2^2=32\)

\(\Rightarrow2^n=8\)

\(\Rightarrow2^n=2^3\Leftrightarrow n=3\)

Answer 2

\(2^{n+2}.2=64\)

\(2^{n+2}=64\div2\)

\(2^{n+2}=32=2^4\)

\(\Rightarrow n+2=4\)

\(\Rightarrow n=2\)

Answer 3

2ⁿ⁺².2 = 64

=> 2ⁿ⁺² = 64.2

=> 2ⁿ⁺² = 128

=> 2ⁿ.2² = 128

=> 2ⁿ.4 = 128

=> 2ⁿ = 32

=> 2ⁿ = 2⁵

=> n = 5