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Ajutati-ma please...Efectuati: (Semnul ^ inseamna la puterea a...)
(4^31+6 x 32^12 - 5 x 16^15):(8^21-5 x 8^20) - 1= ?


Răspuns :

(4³¹+6 x 32¹² - 5 x 16¹⁵):(8²¹-5 x 8²⁰) - 1=

=[(2²)³¹+2x3 x (2⁵)¹² - 5 x (2⁴)⁵]:[(2³)²¹-5 x (2³)²⁰] - 1=

=(2⁶²+3x2⁶¹ - 5x2⁶⁰):(2⁶³-5 x 2⁶⁰) - 1=

=[2⁶⁰(2²+3x2 - 5)]:[2⁶⁰(2³-5)] - 1=

=(2⁶⁰x 5):(2⁶⁰x3) - 1= 

=5/3-1= (5-3)/3=2/3