Question

resolva as equações exponenciais.
${25}^{ \times} = 625$
${3}^{ \times - 5 } = 9$
${10}^{3 \times } 10000$
${10}^{2 \times - 8} = 100$

Answer 1

25ˣ = 125
5²ˣ = 5³

x = 3/2


3ˣ⁻⁵ = 9
3ˣ⁻⁵ = 3²

x = 2 + 5
x = 7


10³ˣ = 10000
10³ˣ = 10⁴

x = 4/3


10²ˣ⁻⁸ = 100
10²ˣ⁻⁸ = 10²

2x = 2 + 8
x = 10/2
x = 5