👤

2x la a doua egal cu 25 pe 2

Răspuns :

[tex]2 {x}^{2} = \frac{25}{2} \: | \div 2[/tex]

[tex] {x}^{2} = \frac{ \frac{25}{2} }{2} [/tex]

[tex] {x}^{2} = \frac{25}{2} \times \frac{1}{2} [/tex]

[tex] {x}^{2} = \frac{25 \times 1}{2 \times 2} [/tex]

[tex] {x}^{2} = \frac{25}{4} [/tex]

[tex]x = \pm \sqrt{ \frac{25}{4} } [/tex]

[tex]x = \pm \frac{ \sqrt{25} }{ \sqrt{4} } [/tex]

[tex]x = \pm \frac{5}{2} [/tex]