i think this is what you meant
so
and you can simply solve x from there, which i got as -2 or 2
for the second question
3. Solving... Help on setting up the problems easier to solve....
a) Solve 10^(x^2 /2 +2)=10,000
b) Solve ln(t^2 / 2)=1
-------------------------------------
Any help on any of these problems would be much appreciated... Thank you!!