Question

Rezolvati urmatoarele ecuatii unde x apartine R.

1.x^2=2
2.x^2=3
3.x^2=5
4.x^2=7

Answer 1

$1) {x}^{2} = 2$

$x = \pm \sqrt{2}$

$2) {x}^{2} = 3$

$x = \pm \sqrt{3}$

$3) {x}^{2} = 5$

$x = \pm \sqrt{5}$

$4) {x}^{2} = 7$

$x = \pm \sqrt{7}$