Question

resolva as equações exponenciais
a)
$5^{x } = \frac{1}{125}$
B)
${3}^{x} = \frac{1}{81}$
C)
${4}^{x} = \frac{1}{64}$
​

Answer 1

a) 5ˣ = 1/125

5ˣ = 1/5³

5ˣ = 5⁻³

x = - 3

b) 3ˣ = 1/81

3ˣ = 1/3⁴

3ˣ = 3⁻⁴

x = - 4

c) 4ˣ = 1/64

4ˣ = 1/4³

4ˣ = 4⁻³

x = - 3