Question

Resolva as equações a seguir:

Answer 1

Explicação passo-a-passo:

a)

$3^{x+1}=9\\\\ 3^{x+1}=3^{2}\\\\\text Igualando\ os\ expoentes:\\\\x+1=2\\\\x=2-1\\\\\boxed{\boxed{x=1}}$

b)

$4^{2x}=16\\ \\4^{2x}=4^{2}\\\\\text Igualando\ os\ expoentes:\\\\2x=2\\\\x=\dfrac{2}{2}\\\\\boxed{\boxed{x=1}}$