Verified answer

[tex]\LARGE\tt{}4 {x}^{2} = 49 \\ \LARGE\tt{}4 {x}^{2} \div 4 = 49 \div 4 \\ \LARGE\tt{} {x}^{2} = 49 \div 4 \\ \\ \LARGE\tt{} {x}^{2} = \frac{49}{4} \\ \\ \LARGE\tt{}x = \pm \sqrt{ \dfrac{49}{4} } \\ \\ \LARGE\tt{}x = \pm \dfrac{7}{2} \\ \\ \LARGE\tt{}x = - \dfrac{7}{2} \\ \\ \LARGE\tt{}x = \dfrac{7}{2} \\ \\ \\ \LARGE\tt{} x_{1} = \{ - \dfrac{7}{2} \} \\ \\ \LARGE\tt{} x_{2} = \{ \dfrac{7}{2} \}[/tex]

[tex]{\large\boxed{\boxed{  { \large \tt Bons~Estudos }}}}[/tex]