Răspuns:
[tex] \bf\sqrt{2} x + 3 = 7[/tex]
[tex]\bf\sqrt{2} x = 7 - 3[/tex]
[tex]\bf\sqrt{2} x = 4[/tex]
[tex]\bf x = \dfrac{4}{ \sqrt{2} }[/tex]
[tex] \boxed{\bf x = 2\sqrt{2} }[/tex]
Salut!
[tex] \sqrt{2x} + 3 = 7 \\ \sqrt{2x } = 7 - 3 \\ \sqrt{2x} = 4 \\ x = \frac{4}{ \sqrt{2} } \\ x = 2 \sqrt {2} [/tex]
