Răspuns :
(v2)^6=2^3
(1/2)^3=1/(2^3)
[v(25/2)]^6=25^3/2^3=5^6/2^3
(5/v2)^4=5^4/2^2
v(16/25) =4/5
E=2^3 x(1/2^3)-[(5^6)/(2^3)]:(5^4)/(2^2) x4/5
E=1-[(5^6)/(2^3)] x (2^2)/(5^4) x4/5
E=1-(5^2) /2 x 4/5=1-25/2x4/5=1-10 =-9
(1/2)^3=1/(2^3)
[v(25/2)]^6=25^3/2^3=5^6/2^3
(5/v2)^4=5^4/2^2
v(16/25) =4/5
E=2^3 x(1/2^3)-[(5^6)/(2^3)]:(5^4)/(2^2) x4/5
E=1-[(5^6)/(2^3)] x (2^2)/(5^4) x4/5
E=1-(5^2) /2 x 4/5=1-25/2x4/5=1-10 =-9