Math
posted by Kellie .
The problem 8^x = 16^x+2 the choices a)8 and b)8. Help please!
Given that information I want to say the answer is 8 ?
where is the 2. Use parentheses.
Is it 16^{x+2} or 16^{x}+2
The 2 is part of the exponent.
Take the log of both sides.
log 8^{x}=log 16^{x+2}
x*log 8 = x+2*log 16
solve for x
Perhaps I should have used parentheses, too.
x*log 8 = (x+2)*log 16.
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