Question

Resolva as equações, sendo U = IR 4x²-5=0

Answer 1

Olá Jessica,

$4 x^{2} -5=0\\ 4 x^{2} =5\\\\ x^{2} = \dfrac{5}{4}\\\\ x= \pm\sqrt{ \dfrac{5}{4} }\\\\ x=\pm \dfrac{ \sqrt{5} }{ \sqrt{4} }\\\\ x=\pm \dfrac{ \sqrt{5} }{2}\\\\ S=\left\{ \dfrac{ \sqrt{5} }{2},- \dfrac{ \sqrt{5} }{2}\right\}$

Tenha ótimos estudos =))