carmengeelew: simplify (e^3/3e)^-2
is the 3e supposed to be in brackets? Anyway, to take a negative power of anything, just swap the number, letter or whatever to the other side of the fraction line and change the - to a +
It's simple
then simplify. (or you can simplify first if you like)
Tell me what you get and I'll tell you if it is correct.
+118654 
