How do you simplify #e^x*e^(-3x)*e^4#? Precalculus Exponential and Logistic Functions The Natural Base e 1 Answer LM Dec 26, 2016 #e^(-2x+4) or e^(4-2x)# Explanation: law of indices: #a^m * a^n = a^(m+n)# in the same way: #e^x * e^y = e^(x+y)#, since the base is the same. #therefore e^x * e^(-3x) * e^4 = e^(x+ -3x+4)# #=e^(-2x+4) or e^(4-2x)# Answer link Related questions What is base e? What are common mistakes students make with base e? What is the value of e? What is Euler's number? What is the significance of Euler's number? What does Euler's number represent? How do I work with Euler's number in Excel? How do I find the inverse of #e^x#? How does e relate to #pi#? Is the number e rational or irrational? See all questions in The Natural Base e Impact of this question 6584 views around the world You can reuse this answer Creative Commons License