Question

Aflati solutiile naturale ale ecuatiilor. A) 2la x =16 b)3la x +1=27 c)5la x -1 -1= 24

Answer 1

$a) 2^{x}=16 <=> 2^{x}= 2^{4}=>x=4$
$b) 3^{x+1}=27 <=> 3^{x+1}= 3^{3}=>x+1=3=>x=2$
$c) 5^{x-1}-1=24 => 5^{x-1}=25 <=> 5^{x-1}= 5^{2}=>x-1=2=>x=3$