Odpowiedź :
(x + 5)² - 10(x - 3) dla x = √5
(√5 + 5)² - 10(√5 - 3) = 5 + 10√5 + 25 - 10√5 + 30 = 60
[tex](x+5)^2-10(x-3)\ ,\ x=\sqrt{5}=\\=(\sqrt{5}+5)^2-10(\sqrt{5}-3)=\\=((\sqrt{5})^2+2*\sqrt{5}*5+5^2)-(10*\sqrt{5}-10*3)=\\=5+10\sqrt{5}+25-10\sqrt{5}+30=60[/tex]