87.6k views
5 votes
What is the value of n in the equation 2^2x2^n =(2^4)^3

2 Answers

2 votes

4 * 2^(n) = 16 ^(3)

4 * {2}^(n) = 4096
dived 4 on both sides
2^n=1024
n=10
User Ramppy Dumppy
by
6.3k points
5 votes
Please use * to indicate mult., not "x."

Then 2^2*2^n = (2^4)^3
4*2^n = 16^3
2 is the base of the first exponential, and 16 is the base of the second.

Rewrite 16 as 2^4 (as it was originally given).

Then 4*2^n = (2^4)^3

This is equivalent to 2^(n+2) = 2^12
Solving for n: n+2 = 12, and so n = 10 (answer. You should check this.
User Johann Bauer
by
6.6k points