Question

calcule o valor de logx 16=2

Answer 1

log(16) = 2 log(x) 
log(16) = log(x²)
16 = x² 
4 = x 

Answer 2

$Log_{x} 16=2\\ x^2=16 (fatorando\,\,16=2^4)\\ x^2=2^4\\ x=4$