a)
[tex] \sqrt{4} + \sqrt{1 } = 4 - 1 \\ 2 + 1 = 4 - 1 \\ 3 = 3 \: adevarat[/tex]
b)
[tex] \sqrt{9} + \sqrt{4} = 9 - 4 \\ 3 + 2 = 5 \\ 5 = 5adevarat[/tex]
c)
[tex] \sqrt{16} + \sqrt{9} = 16 - 9 \\ 4 + 3 = 7 \\ 7 = 7adevarat[/tex]
d)
[tex] \sqrt{(x + 1) {}^{2} } + \sqrt{ {x}^{2} } = (x + 1) {}^{2} - {x}^{2} \\ x + 1 + x = {x}^{2} + 2x + 1 - {x}^{2} \\ 2x + 1 = 2x + 1 \\ 0 = 0adevarat[/tex]
