The number of *positive* values \(x\) which satisfy the equation \[x=8^{\log_2x} -9^{\log_3x}-4^{\log_2x}+\log_{0.5}{0.25}\] is

0;

1;

2;

3.

Can we evaluate \(\log_{0.5}{0.25}\) ?

We know that \(8\) is a power of \(2\) – could use this fact to rewrite \(8^{\log_2x}\)?