Question

SOCORRRO!!!!!!!
4x²-5 (conta prv)

Answer 1

4x² -5 = 0

4x² = 5

${x}^{2} = \frac{5}{4}$

$x = \sqrt{ \frac{5}{4} }$

$x = ±\frac{ \sqrt{5} }{2} \times \frac{ \sqrt{5} }{ \sqrt{5} } = \frac{5}{2 \sqrt{5} }$