4^y+2+5*4^y=336 Help!!

Question

4^y+2+5*4^y=336
Help!!

Comments

в степени толко у или у+2

Answer 1

4^у*4^2 +5*4^у=336
16*4^у +5*4^у=336
21*4^у=336
4^у=16
4^у=4^2
У=2