Question Number 114795 by Algoritm last updated on 21/Sep/20

Answered by MJS_new last updated on 21/Sep/20

3^x =27−9^(2y)   2^x =(1/8)−4^(−y)   ⇒  (1) 27−9^(2y) >0 ⇒ y<(3/4)  (2) (1/8)−4^(−y) >0 ⇒ y>(3/2)  but y<(3/4)∧y>(3/2) is impossible  ⇒ no solution in R