Question

Alguem poderia me dizer se esta certo?
4x²-25=0
4x²=25
2x=√25/2
2x=+/- 5/2
x'=5/2
x"=-5/2

Answer 1

$4x^2-25=0\\4x^2=25\\ \\x^2= \frac{25}{4} \\ \\x=\pm \sqrt{ \frac{25}{4} } \\ \\x=\pm \frac{5}{2}$