M7MBA Moderator View User Profile Posts: 2058 Joined: Sun Oct 29, 2017 4:24 am Thanked: 1 times Followed by:5 members If \(x\) is an integer, is \(9^x+9^{-x}=b?\) by M7MBA » Wed Sep 09, 2020 6:47 am Timer 00:00 Your Answer A B C D E Global Stats If \(x\) is an integer, is \(9^x+9^{-x}=b?\) (1) \(3^x+3^{-x}=\sqrt{b+2}\) (2) \(x > 0\) Answer: A Source: Official Guide Top Quote
