Question

Calculati:
(√3-5)²=
(2-√7)²=

Answer 1

$a ) (\sqrt{3} -5)^{2} = 3-10\sqrt{3} +25=28-10\sqrt{3} </p><p>\\b) (2-\sqrt{7}) ^{2} =4-4\sqrt{7} +7 =11-4\sqrt{7}$

Answer 2

Prima = 3-25= -22

A doua= 4-7= -3