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cum???(√3+1) la puterea 2

Răspuns :

(√3+1)² avand in vedere (a+b)²=a²+2ab+b² ⇒ 3+2√3+1=4+2√3
mai detaliat (√3+1)² folosind formula de mai sus
√3²+2√3*1+1² = 3+2√3*1+1² = 3+2√3+1² =3+2√3+1
OBS!!! Formule de calcul prescurtat:

[tex]\boxed{(a+b)^{2}=a^{2}+2ab+b^{2}}[/tex]

[tex]\boxed{(a-b)^{2}=a^{2}-2ab+b^{2}}[/tex]

[tex]\boxed{(a+b)(a-b)=a^{2}-b^{2}}[/tex]


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

[tex]=3+2\sqrt{3}+1=[/tex]

[tex]\boxed{=4+2\sqrt{3}}[/tex]