1.
a. [tex](\sqrt{7} )^2 - (\sqrt{3} )^2=7-3=4[/tex]
b. [tex]4*(\sqrt{5} )^2-5\sqrt{2^2} = 4*5-5*2= 20-10=10[/tex]
2.
a. [tex]\sqrt{64} + \sqrt{144} +\sqrt{196} = 8+12+14=34[/tex]
b. [tex]\sqrt{625} -\sqrt{225}- \sqrt{400} =25-15-20=-10[/tex]
3. -
4.
2. [tex]\sqrt{\frac{1}{3} } ^2 = \frac{1}{3} = 0,33[/tex]
1. [tex](\sqrt{0,5^2})^2= 0,5^2 = 0,25[/tex]
3. [tex](\sqrt{0,36} )^2 = 0,36[/tex]
