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solutia naturala a ecuatiei 2x²=98 (pls repede)

Răspuns :

Hawky
2x^2=98|:2
x^2=49
x=7
V:2•7^2= 2•49= 98

Sper ca te-am ajutat!
Coroana?
McKiobillz

Răspuns:

    [tex]\text{S = \{7\}}[/tex]

Explicație pas cu pas:

    [tex]\text{2x}^2=98~\big{|}:2\\\\\text{x}^2=49\\\\\text{x}=\pm\sqrt{49}\\\\\text{x}_1\text{, x}_2=\pm\text{7}\\\text{x}\in\mathbb{N}\\\\\implies \text{x}=\text{7}\\\\\text{S = \{7\}}[/tex]

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