Question

ME AJUDEMMMMMMMM S.O.S Qual a resposta da equação: 3x + 4(1 + x) + 2 = 3(5x - x) - 6?

$a \: \: - \frac{12}{5}$
$b \: \: \frac{12}{5}$
$c \: \: - \frac{4}{15}$
$d \: \: \frac{4}{15}$

em 8² = 64, responda às seguintes perguntas:

a) Qual é a base?
b) Qual é a potência?
c) Qual é o expoente?

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Answer 1

$\large\boxed{\begin{array}{l} \displaystyle \sf 1.\\\\\displaystyle\sf 3x +4(1+x)+2=3(5x-x)-6\\\displaystyle\sf 3x+4+4x+2=3(5x-x)-6\\\displaystyle\sf 7x + 4+2=3(5x-x)-6\\\displaystyle\sf 7x+6=3(5x-x)-6\\\displaystyle\sf 7x+6=3 \times 4x-6\\\displaystyle\sf 7x+6=12x-6\\\displaystyle\sf 7x+6-12x=-6\\\displaystyle\sf -5x +6=-6\\\displaystyle\sf -5x=-6-6\\\displaystyle\sf -5x=-12\\\\\displaystyle\sf x=\frac{-12}{-5} \\ \\\displaystyle\sf x= \dfrac{12}{5} \to alt\:b \sf\end{array}}$

$\large \boxed{\begin{array}{l} \displaystyle\sf 2.\\\\\displaystyle\sf 8^{2}=64\\\\\displaystyle\sf base \to 8\\\displaystyle\sf pot\hat{e}ncia \to 64\\\displaystyle\sf expoente \to 2 \sf\end {array}}$