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Rezolvati urmatoarele ecuatii unde x apartine R.

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


Răspuns :

[tex]1) {x}^{2} = 2[/tex]

[tex]x = \pm \sqrt{2} [/tex]

[tex]2) {x}^{2} = 3[/tex]

[tex]x = \pm \sqrt{3} [/tex]

[tex]3) {x}^{2} = 5[/tex]

[tex]x = \pm \sqrt{5} [/tex]

[tex]4) {x}^{2} = 7[/tex]

[tex]x = \pm \sqrt{7} [/tex]