Răspuns:
a) 7 b) 3 c) [tex]\sqrt{3}[/tex] d) [tex]\sqrt{5}[/tex] e) [tex]\frac{15}{\sqrt{2} }[/tex] f) [tex]\sqrt{6}[/tex]
Explicație pas cu pas:
[tex]a) 2x^{2} =98 =>> x^{2} =49 =>> x=7 \\b)\\\frac{x^{2} }{4} =36 =>> x^{2} =9 =>> x=3\\c) 3x^{2} =9 =>> x^{2} =3 =>> x=\sqrt{3} \\d)4x^{2} =20 =>>x^{2} =5 =>> x=\sqrt{5}\\ e)\frac{x^{2} }{3}=\frac{75}{2} =>>x^{2} =\frac{75*3}{2} = \frac{225}{2} =>> x=\frac{15}{\sqrt{2} } \\ f) x^{2} \sqrt{3} = 6\sqrt{3} =>> x^{2} = 6 =>> x=\sqrt{6}[/tex]
