Question

Resolva as equações exponenciais
A)4×elevado a x = 128
B)3.2×+3=192
C)2×-3=8

Answer 1

a) 4ˣ = 128

(2²)ˣ = 2⁷

2x = 7

x = 7/2

b) 3 * 2ˣ⁻³ = 192

2ˣ⁻³ = 192/3

2ˣ⁻³ = 64

2ˣ⁻³ = 2⁶

x - 3 = 6

x = 6 + 3

x = 9

c) 2ˣ⁻³ = 8

2ˣ⁻³ = 2³

x - 3 = 3

x = 3 + 3

x = 6