Respuesta :
Desarollemos:
RecuerDa :
(a -b ) ^2 = a^2 -2ab +b^2
(3n -1/2)^2 = (3n)^2 - 2(3n)(1/2) + (1/2)^2
9n^2 -3n + (1/4)
SaLuDos :)'
Desarollemos:
RecuerDa :
(a -b ) ^2 = a^2 -2ab +b^2
(3n -1/2)^2 = (3n)^2 - 2(3n)(1/2) + (1/2)^2
9n^2 -3n + (1/4)
SaLuDos :)'