Posted by **Kellie** on Tuesday, January 16, 2007 at 10:40pm.

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.