Question

a difença entre o quadrado de x e 4 ,e igual a 140 determine o valor de x em cada caso

Answer 1

Solução:

$x^{2}$ - 4 = 140

$x^{2}$ = 140 + 4

$x^{2}$ = 144

x = $\sqrt{144}$

x = 12

Answer 2

$\Large\displaystyle\begin{gathered} \tt x^2-4=140\end{gathered}$

$\Large\displaystyle\begin{gathered} \tt x^2=140+4\end{gathered}$

$\Large\displaystyle\begin{gathered} \tt x^2=144\end{gathered}$

$\Large\displaystyle\begin{gathered} \tt x=\sqrt{144}\end{gathered}$

$\Large\displaystyle\begin{gathered}\boxed{ \tt x=12}\end{gathered}$