How do you solve for x in #3^(2x) + 3^(x+1) - 4 = 0#? Precalculus Solving Exponential and Logarithmic Equations Logarithmic Models 1 Answer kamil9234 Apr 26, 2018 x=0 Explanation: #3^(2x)+3^(x+1)=4# #3^(2x)+3^(x+1)=1+3# #3^(2x)+3^(x+1)=3^0+3^1# So: #2x=0 nn x+1=1# So: #x=0# Answer link Related questions What is a logarithmic model? How do I use a logarithmic model to solve applications? What is the advantage of a logarithmic model? How does the Richter scale measure magnitude? What is the range of the Richter scale? How do you solve #9^(x-4)=81#? How do you solve #logx+log(x+15)=2#? How do you solve the equation #2 log4(x + 7)-log4(16) = 2#? How do you solve #2 log x^4 = 16#? How do you solve #2+log_3(2x+5)-log_3x=4#? See all questions in Logarithmic Models Impact of this question 6498 views around the world You can reuse this answer Creative Commons License