Efectuati calculele:
a) -6² : (2²x3) - (-54 + 2³x7)² ;
b) -8² : (-2²)³ - (-50 + 2^4 x3)² ;
c) [(-3)³]² : (-3)^5 + (-2³x3 +5²)^7 .
In caz ca nu stiti, chestia aia cu " ^ " ( ex : (-3)^5 ) inseamna " la puterea [ 5 ] "...

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Răspunsuri

Cel mai inteligent răspuns!
2014-09-28T21:00:09+03:00
a) -6² : (2²x3) - (-54 + 2³x7)² =36:12-(-54+56)²=3-(+4)=3-4=-1
b) -8² : (-2²)³ - (-50 + 2^4 x3)² =64:(-2)^6-(-50+48)
²=64:64-(-2)²=1+4=5
c) [(-3)³]² : (-3)^5 + (-2³x3 +5²)^7 =(-3)^6:(-3)^5+(-24+25)^7=(-3)^6-5+1^7=(-3)+1=-2