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rog ajutor cum se face:7x2la puterea1997-6x2la puterea1996-2x2laputerea1998

Răspuns :

7x2^1997-6x2^1996-2x2^1998=2^1996(7x2-6-2x2^2)=2^1996(14-6-8)=2^1996*0=0