Question

Which of the following is the solution to the equation 8^(y – 2) = 2^y ?

Answer 1

y = 3,
y = -1,
y = –3, and
y = 1

Answer 2

2^(3(y - 2)) = 2^y
2^(3y - 6) = 2^y
3y - 6 = y
2y = 6
y = 3

Answer 3

Option 1.

Answer 4

\[8^{y-2} = \frac{8^y}{8^2}\]\[\frac{1}{8^2} (2^3)^y = 2^y\]

Answer 5

pratus way is easier xD