Timiteodorap47rxsask
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[tex]\sqrt x^{2}+2=3\sqrt{3}[/tex]
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Răspuns :

Slavitescudoraask

V(x^2+2) = 3V3 ridici totul la puterea a2

[V(x^2+2)]^2 = (3V3)^2

x^2+2 = 9×3

(un radical ridicat la puterea a 2 se simplifica)

x^2+2 = 27

x^2= 27-2

x^2 = 25

x=V25

x1= 5

x2 = -5

Targoviste44ask

[tex]\it\sqrt{x^2+2}=3\sqrt3\Rightarrow\ \sqrt{x^2+2}=\sqrt{27}\Rightarrow\ x^2+2=27\Rightarrow\ x^2=25\Rightarrow\ x=\pm5[/tex]

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