Calculati:
(√3-5)²=
(2-√7)²=


Răspuns :

[tex]a ) (\sqrt{3} -5)^{2} = 3-10\sqrt{3} +25=28-10\sqrt{3}

\\b) (2-\sqrt{7}) ^{2} =4-4\sqrt{7} +7 =11-4\sqrt{7}[/tex]

Prima = 3-25= -22

A doua= 4-7= -3