Question

resolva em lR as equaçoes d) 5²ˣ -1 = 1 e) 7ˣ = 8ˣ F) 3√25ˣ = √5

Answer 1

Explicação passo a passo:

d) 5^(2x - 1) = 5^0

2x - 1 = 0

2x = 1

x = 1/2

e)

7^x = 8^x

x = 0

7^0 = 1, 8^0 = 1

f)

³√25^x = √5

5^(2x/3) = 5^(1/2)

2x/3 = 1/2

2x = 3/2

x = 3/4