Question

tìm x

n, 2^x+2-2^x+1=32

Answer 1

Ta thấy:2⁶-2⁵=32

Vậy x = 6 - 2(hoặc 5-1)

    =>x = 4

Answer 2

\(2^{x+2}-2^{x+1}=32\)

\(\Rightarrow2^x\times2^2-2^x\times2=32\)

\(\Rightarrow2^x\times\left(2^2-2\right)=32\)

\(\Rightarrow2^x\times2=32\)

\(\Rightarrow2^x=32:2\)

\(\Rightarrow2^x=16\)

\(\Rightarrow2^x=2^4\)

\(\Rightarrow x=4\)

Vậy x = 4

_Chúc bạn học tốt_

Answer 3

\(2^{x+2}-2^{x+1}=32.\)

\(\Leftrightarrow2^x.2^2-2^x.2=32\)

\(\Leftrightarrow2^x.\left(2^2-2\right)=32\)

\(\Leftrightarrow2^x.2=32\)

\(\Leftrightarrow2^x=16\)

\(\Leftrightarrow2^x=2^4\)

\(\Leftrightarrow x=4\)