Question

Responda as seguintes equações exponenciais

Answer 1

d)
$10 \cdot 2^{x+2}= 10 \\\\ 10 \cdot 2^{x+2} = 10 \cdot 1 \\\\ \frac{10 \cdot 2^{x+2}}{10} = 1 \\\\ 2^{x+2} = 1 \\\\ 2^{x+2} = 2^0 \\\\ x + 2 = 0 \\\\ \boxed{x = -2}$

.4.a)
$2^{x+1} + 2^x = 48 \\\\ 2^{x+1} + 2^x = 32 + 16 \\\\ 2^{x+1} + 2^x = 2^5 + 2^4 \\\\ \boxed{x=4}$