Question

resolva a equação 3² + log5x = 81

Answer 1

3² + log5x = 81
9 + log5x = 81
log 5x = 81-9
log 5x = 72
 
aplicando a forma logarítmica
10^{72} = 5x
/frac {10^{72}}{5} = x
x = 2*$\frac{x}{y}$10^{71}