#math trivia for #June25: #177 equals x^2 + 2^x for what integer x?
— Burt Kaliski Jr. (@modulomathy) June 25, 2012
Answer: x = 7. One way to solve this is to note that the largest that x can be is 7, otherwise 2x would exceed 177. That also happens to be the answer.
modulomathy.com 