Ask Question
21 August, 20:22

If 3^2x+1=81, what is the value of x?

x=1/4

x=1/2

x=3/2

x=2/3

+1
Answers (1)
  1. 21 August, 20:50
    0
    3^ (2x+1) = 81

    3^ (something) = 81

    3^4=81. I know this because 3X3X3X3=81

    If I know 3^4=81, then I need to find a solution to get 4 for my exponent.

    Let's solve.

    2x+1=4

    2x=3

    x=3/2
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “If 3^2x+1=81, what is the value of x? x=1/4 x=1/2 x=3/2 x=2/3 ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers