Solve for x....

2^(2x+1) = 3^(2x-5)

Printable View

- Nov 6th 2009, 07:30 AMCantcountWontcountLogarithms... I think?
Solve for x....

2^(2x+1) = 3^(2x-5) - Nov 6th 2009, 07:40 AMmathaddict
- Nov 6th 2009, 07:51 AMCantcountWontcount
Thanks addict, the answer on my tutorial sheet must be wrong...

I completed it by doing

(2x + 1)log2=(2x - 5)log3

2xlog2+log2=2xlog3-5log3

2xlog3-2xlog2=log2+5log3

2x(log3-log2)=log2+5log3

2x=(log2+5log3)/(log3-log2)......

I get the same answer doing it this way, was pulling my hair out for ages.

Thanks again