Mess with the denominator:
And now we can use these rules:
Distribute the 2 into the denominator
I'm pretty sure that's right, at the very least, I like all the steps I used to get there.
This is a shorter version of angel.white's solution . . .
Fast solutions always are found with practice and of course, experience. (Smart people can get fast solutions too.)
I just tripped over the most amazing approach . . .
. . Then: .
Back-substitute: . . . . ta-DAA!
Is that scary enough?
Gonna have to check for it under my bed tonight with a flashlight. (Sweating)
Well anyway to contemplate it wasn't necessary to apply the product rule, just note and the rest follows.