Asked by Carla
1.if f(x)=8^x, find the value of f(2/3)
2. If 8^2x=2^(x+5), what is the value of x?
2. If 8^2x=2^(x+5), what is the value of x?
Answers
Answered by
Damon
8^(2/3) = [ 8^(1/3) ]^2 = 2^2 = 4
(2^3)^(2x) = 2^(x+5)
2^(6x) = 2^(x+5)
6 x = x + 5
5 x = 5
x = 1
(2^3)^(2x) = 2^(x+5)
2^(6x) = 2^(x+5)
6 x = x + 5
5 x = 5
x = 1
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