Question

ex 7 dau 10 pucte va rog îmi trebe azi

Answer 1

a) (218 000 + 21 800 + 2180) :(21800 + 2180 + 218) =

241980 : 24198 = 10

b) (2^3 + 2^3)^2 :(2^2 + 2^2):2 +2^0*0 =

2^8:2^3:2 = 2^4   = 16

c) (3*15^12 + 2*15^12) : 5^13 =

5*15^12 : 5^13 = 3^12*5^12:5^12 = 3^12

d) 6*2^1993 + 2*2^1994 - (2^1997 - 2^1996) =

2^1993(6+2*2-2^4+2^3) = 2^1993(6+4-16+8) = 2^1993*2 = 2^1994

e) 4 + 4^10:(8^2)^3 + [4^8*(3^3)^5]:(9^2*3^10):8^5 =

4 + 2^20:2^18 + 2^16*3^15:3^14:2^15 =

4 + 4 + 2*3 = 8 + 6 = 14