have you ever find a genuis like this ?

This is from my friend forward's mail. First is the expand, he did raelly expand it ... WEll !
Then.. Find the x... He so cleaver , in 0.000001 second found that x... !

I finally realize why i cannot score my math, Hahaha, because i'm not a genius like this guy .
haha.
It's ok. I drop out from science stream.