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[tex](2+\sqrt{3} )^3[/tex]
Pls,help+explicatie+formula


Răspuns :

(a+b)³=(a²+2ab+b²)(a+b)=a³+3a²b+3ab²+b³
(2+√3)³=8+12√3+18+3√3=26+15√3
(a+b)³=a³+3a²b+3ab²+b³
a=2, b=√3
(2+√3)³=2³+3x2²x√3+3x2x√3²+√3³=8+12√3+18+3√3=
26+15√3