Question

resolva as equações exponenciais
81^x=27
25^x=125
16^x=32
343^x=49

Answer 1

a) 81ˣ = 27

(3⁴)ˣ = 3³

4x = 3

x = 3/4

b) 25ˣ = 125

(5²)ˣ = 5³

2x = 3

x = 3/2

c) 16ˣ = 32

(2⁴)ˣ = 3⁵

4x = 5

x = 5/4

d) 343ˣ = 49

(7³)ˣ = 7²

3x = 2

x = 2/3

Answer 2

3^4x=3^3
4x=3
x=3/4

5^2x=5^3
2x=3
x=3/2

2^4x=2^5
4x=5
x=5/4

7^3x=7^2
3x=2
x=2/3