Question 701842
Sorry but that's not an equation. An equations must
contain an equal sign "=". It's an expression,
and you can't "solve" an expresion.  The instructions
may have told you to evaluate it at some value of "a"
and "b", or something else.  

State what your book or worksheet says that you are 
supposed to do with that expression in the thank-you 
note and I'll email you back with what to do.

Edwin</pre>