What is the value of \(2^x + 2^{-x}?\)

This topic has expert replies
Legendary Member
Posts: 2898
Joined: Thu Sep 07, 2017 2:49 pm
Thanked: 6 times
Followed by:5 members

What is the value of \(2^x + 2^{-x}?\)

by Vincen » Thu Sep 09, 2021 6:34 am

Timer

00:00

Your Answer

A

B

C

D

E

Global Stats

What is the value of \(2^x + 2^{-x}?\)

(1) \(x < 0\)
(2) \(4^x + 4^{-x} = 23\)

Answer: B

Source: Official Guide