$a)2+2\stackrel{?}{>}\sqrt{7}$

$4\stackrel{?}{>}\sqrt{7}$

$\sqrt{16}\stackrel{?}{>}\sqrt{7}tak$

 

$b)\sqrt{225}=15$

$7+8\stackrel{?}{>}15$

$15\stackrel{?}{>}15nie$

 

 

$c)\frac{1}{4}+\frac{1}{6}\stackrel{?}{>}\frac{1}{2}$

$\frac{3}{12}+\frac{2}{12}\stackrel{?}{>}\frac{6}{12}$

$\frac{5}{12}\stackrel{?}{>}\frac{6}{12}nie$

 

 

$d)1+\frac{1}{\sqrt{2}}\stackrel{?}{>}\sqrt{2}\mid \cdot \sqrt{2}$

$\sqrt{2}+1\stackrel{?}{>}2$

$1,41+1\stackrel{?}{>}2$

$2,41\stackrel{?}{>}2tak$