Răspuns:
a)
[tex] \sqrt{82 {}^{2} } - \sqrt{18 {}^{2} } = 82 - 15 = 64[/tex]
b)
[tex] \sqrt{65 {}^{2} } - \sqrt{63} {}^{2} = 65 - 63 = 2[/tex]
c)
[tex] \sqrt{11 3 {}^{2} } - \sqrt{112} {}^{2} = 113 - 112 = 1[/tex]
d)
[tex] \sqrt{85} {}^{2} - \sqrt{36} { }^{2} = 85 - 36 = 49[/tex]
