Respuestas

2014-02-12T17:16:40+01:00
Blanca,
Aqui aplicamos lo que te puse en forma general

(1/4m - 2/3)^2 = (1/4m)^2 - 2(1/4/m)(2/3) + (2/3)^2
                       = (1/16)m^2 - (1/3)m + 4/9    RESULTADO FINAL
                       
  • Usuario de Brainly
2014-02-12T20:20:23+01:00
(1/4m-2/3)^2 = (1/4m)^2-2(1/4m)(2/3)+(2/3)^2
1/16m^2 -4/12m+4/9  simplificando
1/16m^2 -1/3m +4/9