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Calculati:
a) (2007 la puterea 5+2004 la putera 4+2007 la puterea 3+2007 la puterea 2+2007) inmultit (2007-3inmultit cu 669)


Răspuns :

(2007⁵+2007⁴+2007³+2007²+2007)*(2007-3*669)=
=(2007⁵+2007⁴+2007³+2007²+2007)*(2007-2007)=
=(2007⁵+2007⁴+2007³+2007²+2007)*0= 0