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Ivanciusteluta
a fost răspuns

(2+[tex] \sqrt{3} [/tex] ) ^2 + (1-2[tex] \sqrt{3} [/tex] ) ^2 =20

Răspuns :

Matepentrutoti
[tex](2+ \sqrt{3} )^2+(1-2\sqrt{3})^2=4+4\sqrt{3}+3+1-4\sqrt{3}+12=20[/tex]
CarMina03
(2+√3)²+(1-2√3)²=2²+2*2*√3+(√3)²+1²-2*1*2√3+(2√3)²=4+4√3+3+1-4√3+12=4+3+1+12=7+1+12=8+12=20