Respuestas

2012-09-11T21:45:13+02:00

2(-4)(-3)+7(-1)(-1)(-2)+(-1)(-2)2(-3

=-8(-3)+7(1)(-2)+(2)(-3)

=24-14-6

=4

2012-09-11T22:48:13+02:00

2(-4)(-3)+7(-1)(-1)(-2)+(-1)(-2)2(-3

=-8(-3)+7(1)(-2)+(2)(-3)

=24-14-6

=4

 

esta respuesta es buena