Решение уравнений [latex]2 \sqrt{x} =30[/latex] , [latex]2 x^{2} =30[/latex] , [latex] x^{2} =121 [latex] , x^{2} =11[/latex] , [latex]2 x^{2} =450[/latex]

[latex]2 \sqrt{x} = 30[/latex] [latex]\sqrt{x} = 15[/latex] [latex]x = 15^2[/latex] [latex]x = 225[/latex] [latex]2x^2 = 30 x^2 = 15 x1 = \sqrt{15} ; x2 = - \sqrt{15} [/latex] [latex]x^2 = 121[/latex] [latex]x1 = 11 ; x2 = -11[/latex] [latex]x^2 = 11 x1 = \sqrt{11} ; x2 = - \sqrt{11} [/latex] [latex]2x^2 = 450 x^2 = 225 x1 = 15 ; x2 = -15[/latex]