4^x+4^x+3=4160

=>4^x+4^x.4³=4160

=>4^x(1+64)=4160

=>65.4^x=4160

=>4^x=64

=>x=3

Vậy x=3

\(4^x+4^{x+3}=4160\)

\(\Rightarrow4^x+4^x.4^3=4160\)

\(\Rightarrow4^x.\left(1+4^3\right)=4160\)

\(\Rightarrow4^x.65=4160\)

\(\Rightarrow4^x=64\)

\(\Rightarrow x=3\)

\(4^x+4^x.4^3=4160\)

\(\Leftrightarrow4^x\left(1+64\right)=4160\)

\(\Leftrightarrow4^x=4160:65\)

\(\Leftrightarrow4^x=64=4^3\)

\(\Leftrightarrow x=3\)

\(4^x+4^{x+3}=4160\)

\(4^x\times\left(1+4^3\right)=4160\)

\(4^x\times\left(1+64\right)=4160\)

\(4^x\times65=4160\)

\(4^x=\frac{4160}{65}\)

\(4^x=64\)

\(4^x=4^3\)

\(x=3\)

\(4^x+4^{x+3}=4160\)

\(\Rightarrow4^x+4^x.4^3=4160\)

\(\Rightarrow4^x.\left(1+4^3\right)=4160\)

\(\Rightarrow4^x.65=4160\)

\(\Rightarrow4^x=64\)

\(\Rightarrow4^x=4^3\)

\(\Rightarrow x=3\)

Vậy \(x=3\)

\(4^{x+3}+4^x=4160\)

\(\Rightarrow4^x.4^3+4^x=4160\)

\(\Rightarrow4^x.\left(4^3+1\right)=4160\)

\(\Rightarrow4^x.65=4160\)

\(\Rightarrow4^x=4160:65\)

\(\Rightarrow4^x=64\)

\(\Rightarrow4^x=4^3\)

\(\Rightarrow x=3\)

\(4^{x+3}+4^x=4160\)

\(\left(4^x\cdot4^3\right)+4^x=4160\)

\(4^x\cdot\left(4^3+1\right)=4160\)

\(4^x\cdot\left(64+1\right)=4160\)

\(4^x\cdot65=4160\)

\(4^x=4160:65\)

\(4^x=64\)

\(\Rightarrow4^x=4^3\)

\(\Rightarrow x=3\)

Thưa toàn thể quý vị, chào mừng các bạn đến đây

\(4^{x+3}+4^x=4160\)

\(4^x\left(4^3+1\right)=4160\)

\(4^x.65=4160\)

\(4^x=4160:65\)

\(4^x=64\)

=> x = 3

\(4^x+4^{x+3}=4160\)

\(\Leftrightarrow4^x.\left(1+4^3\right)=4160\)

\(\Leftrightarrow4^x.65=4160\)

\(\Leftrightarrow4^x=4160:65=64\)

\(\Rightarrow x=3\)

4^x+4^x+3=4160

\(\Rightarrow\)4^x+4^x.4³=4160

\(\Rightarrow\)4^x.(1+4³)=4160

\(\Rightarrow\)4^x.65=4160

\(\Rightarrow\)4^x=4160:65

\(\Rightarrow\)4^x=64

\(\Rightarrow\)4^x=4³

\(\Rightarrow\)x=3

\(4^x+4^{x+3}=4160\)

\(4^x\left(1+4^3\right)=4160\)

\(\Rightarrow4^x\cdot65=4160\)

\(\Rightarrow4^x=64\)

\(\Rightarrow4^x=4^3\)

\(\Rightarrow x=3\)

Ta làm theo kiểu đặt nhân tử chung nha :

  \(4^x+4^{x+3}=4160\)

\(=>4^x\left(1+4^3\right)=4160\)

\(=>4^x.65=4160\)

\(=>4^x=64\)

\(=>x=3\)

ta có :

 4160 chia liên tục cho 4 được 9 lần 

mà 9 - 3 = 6 . vậy 2 lần x = 6

x = 6 : 2 =  3 

nhé !

dễ

Bạn tự suy nghĩ cách làm nhé !

\(4^x+4^{x+3}=4160\)

\(x=3\)

4^x(1+4³) = 4160

4^x = 64

x = 3