a)
\sqrt4=\sqrt{2^2}=2
\sqrt9=\sqrt{3^2}=3
\sqrt{64}=\sqrt{8^2}=8
b)
\sqrt{16}=\sqrt{4^2}=4
\sqrt{36}=\sqrt{6^2}=6
\sqrt{400}=\sqrt{20^2}=20
\sqrt{900}=\sqrt{30^2}=30
c)
\sqrt{25}=\sqrt{5^2}=5
\sqrt{121}=\sqrt{11^2}=11
\sqrt{1600}=\sqrt{40^2}=40
\sqrt{4900}=\sqrt{70^2}=70
d)
\sqrt1=1
\sqrt{144}=\sqrt{12^2}=12
\sqrt{6400}=\sqrt{80^2}=80
\sqrt{1000000}=\sqrt{1000^2}=1000
e)
\sqrt{\frac{1}{4}}=\sqrt{(\frac{1}{2})^2}=\frac{1}{2}
\sqrt{\frac{25}{36}}=\sqrt{(\frac{5}{6})^2}=\frac{5}{6}
\sqrt{\frac{16}{121}}=\sqrt{(\frac{4}{11})^2}=\frac{4}{11}
\sqrt{\frac{9}{144}}=\sqrt{(\frac{3}{12})^2}=\frac{3}{12}
f)
\sqrt{0,01)}=\sqrt{0,1^2}=0,1
\sqrt{0,49}=\sqrt{0,7^2}=0,7
\sqrt{1,21}=\sqrt{1,1^2}=1,1
\sqrt{2,25}=\sqrt{1,5^2}=1,5