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Calculati :8-5√3+1/2·(5+√3)²

Răspuns :

= 8  -  5 √ 3  + 25 / 2 + 5√3  + 3/2 =
=  8 + 28  / 2 =
= 8  + 14  = 22
8-5√3+1/2·(5+√3)²=
8-5√3+1/2·(25+10√3+3)=
8-5√3+1/2·(28+10√3)=
8-5√3+28/2+10√3/2=
8+14=22