Question

Quais as raízes dessa equação do segundo grau: 4x^2 - 1 =0
4

Answer 1

$4x^2 - \frac{1}{4} = 0\\\\4x^2=\frac{1}{4}\\\\x^2=\frac{1}{4.4}\\\\x^2=\frac{1}{16}\\\\x= \sqrt{\frac{1}{16}}\\\\x= \frac{ \sqrt{1} }{\sqrt{16}} \\\\\boxed{x= \frac{1}{4} }$