Question

4 ^x+3 +4^x =4160

Tìm x

Answer 1

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

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

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

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

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

\(\Rightarrow4^x=64\)

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

\(\Rightarrow x=3\)

Answer 2

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

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

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

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

\(4^x\cdot65=4160\)

\(4^x=4160:65\)

\(4^x=64\)

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

\(\Rightarrow x=3\)

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

Answer 3

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

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

\(4^x.65=4160\)

\(4^x=4160:65\)

\(4^x=64\)

=> x = 3

Answer 4

Cảm ơn các bạn