Question

O valor de x da equação 3^(2x+5)= 1 *

Answer 1

Explicação passo-a-passo:

$3^{2x+5}=1\\\\ 3^{2x+5}=3^{0}\\\\\text Igualando\ os\ expoentes:\\\\2x+5=0\\\\2x=-5\\\\x=\dfrac{-5}{2} \\\\\boxed{\boxed{S=\bigg\{\dfrac{-5}{2}\bigg \}}}$