Answer:
n=10
Step-by-step explanation:
Let's remember that when exponents have the same base (here it is 2), we add the exponents. Therefore, 2^(2+n)=(2^4)^3
Now we will rewrite as 2^(2+n)=2^(4*3) = 2^(2+n)=2^12
Now we have the same base of 2, so we can get rid of them and we have
2+n=12
subtract 2 from both sides: n=10
