Question

Por favor, exercícios de função exponencial​

Answer 1

1)

$2^x=64\ \therefore\ 2^x=2^6\ \therefore\ \boxed{x=6}$

2)

$2^x=128\ \therefore\ 2^x=2^7\ \therefore\ \boxed{x=7}$

3)

$3^x=243\ \therefore\ 3^x=3^5\ \therefore\ \boxed{x=5}$

4)

$9^x=27\ \therefore\ 3^{2x}=3^3\ \therefore\ 2x=3\ \therefore\ \boxed{x=\dfrac{3}{2}}$

5)

$25^x=125\ \therefore\ 5^{2x}=5^3\ \therefore\ 2x=3\ \therefore\ \boxed{x=\dfrac{3}{2}}$