Question

alguém faz rápido pfv

Answer 1

a)
${100}^{x + 3} = \frac{1}{ {1}^{0} }$

$100 {}^{x + 3} = 1$

${100}^{x + 3} = {100}^{0}$

$x + 3 = 0$

$x = - 3$

b)
${2}^{3x - 12} = {2}^{2x + 4}$

$3x - 12 = 2x + 4$

$x = 14$