Răspuns :
Răspuns:
Explicație pas cu pas:
(1+1/2+1/3+1/6)^2- (1+1/2+1/3+1/6)
= (1+1/2+1/3+1/6)(1+1/2+1/3+1/6 - 1)
= (1+1/2+1/3+1/6)(1/2+1/3+1/6)
= (6/6 + 3/6 + 2/6 + 1/6)(3/6 + 2/6 + 1/6)
= 12/6*6/6 = 2*1 = 2
Răspuns:
Explicație pas cu pas:
(1+1/2+1/3+1/6)^2- (1+1/2+1/3+1/6)
= (1+1/2+1/3+1/6)(1+1/2+1/3+1/6 - 1)
= (1+1/2+1/3+1/6)(1/2+1/3+1/6)
= (6/6 + 3/6 + 2/6 + 1/6)(3/6 + 2/6 + 1/6)
= 12/6*6/6 = 2*1 = 2