[tex]a) (\sqrt{2}+1)^2=2+ 2\sqrt{2} +1=3+2\sqrt{2}\\
b) (\sqrt{2}-1)^2=2- 2\sqrt{2} +1=3-2\sqrt{2}\\
c) ( \sqrt{2}+5 )^2=2+10\sqrt{2}+25=27+10\sqrt{2}\\
d) ( \sqrt{7}- \sqrt{2})^2=7-2 \sqrt{14}+2=9- 2 \sqrt{14}\\
e) ( \sqrt{14}+1 )^2=14+2 \sqrt{14}+1=15+2 \sqrt{14}[/tex]