Question

rezolvati in multimea nr reale ecuatia 3 la puterea x +3 la putereax+1=36

Answer 1

[tex]3^x+3^{x+1}=36\\ 3^x+3^x\cdot 3=36\\ 3^x(1+3)=36\\ 3^x\cdot 4=36\\ 3^x=9\\ 3^x=3^2\\ \boxed{x=2}[/tex]