Question

Biết a = \(^{4^x}\) . \(3^y\)= \(6^4\) tìm x+y

 

Answer 1

\(\Rightarrow\left(2^2\right)^x.3^y=\left(2.3\right)^4\)

\(\Rightarrow2^{2x}.3^y=2^4.3^4\)

 \(\Rightarrow2x=y=4\)

\(\Rightarrow x=2;y=4\)

Vậy x + y = 2 + 4 = 6.