Question

qual o valor de x na equação exponencial 3 x+5 = 1 ; 81 (a) – 9 (b) 1 (c) – 1 (d) 9

Answer 1

3ˣ⁺⁵ = 81

3ˣ⁺⁵ = 3⁴

x+5 = 4

x= 4-5

x= -1 ✓