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[tex]( A+ \frac{1}{2} ) ^{2012} + ( A + \frac{1}{2} ) ^ { -2011}[/tex]

Ce fac cu puterile? Le adun? Repedeee!!!! 



Răspuns :

=A²⁰¹²+(1/2)²⁰¹²+A⁻²⁰¹¹+(1/2)⁻²⁰¹¹=
=A²⁰¹²+A⁻²⁰¹¹+2⁻²⁰¹²+2²⁰¹¹=
=A²⁰¹¹(A+A°)+2²⁰¹¹(2⁻¹+1)=
=A²⁰¹¹(A+1)+2²⁰¹¹(1/2+1)