Question

resolva a seguinte equação exponencial (2elevado a x)elevado a x-1=4

Answer 1

$2^x^(^x^-^1^)=4\\\\ 2^x^(^x^-^1^)=2^2\\\\ x(x-1)=2\\\\ x^2-x=2\\\\ x^2-x-2=0\\\\ \Delta=9\\\\\ x'=2\\ x''=-1\\\\ \boxed{S(-1,2)}$