[tex]x = 2[/tex]

[tex]y = \sqrt{x + 2} = \sqrt{2 + 2} = \sqrt{4} = 2[/tex]

[tex]x = - 1.75[/tex]

[tex]y = \sqrt{x + 2} = \sqrt{ - 1.75 + 2} = \sqrt{0.25} = 0.5[/tex]

[tex]y = 5[/tex]

[tex]y = \sqrt{x + 2} \\ 5 = \sqrt{x + 2} \\ x + 2 = 25 \\ x = 23[/tex]

[tex]y = 0.4[/tex]

[tex]y = \sqrt{x + 2} \\ 0.4 = \sqrt{x + 2} \\ x + 2 = 0.16 \\ x = - 1.84[/tex]