Respuestas

2013-07-24T04:01:48+02:00
(x+y)2 = X2+2xy+Y2
(x+y)3 = x3+3(xy)(x+y)+y3
(x+y)(x-y) = x2-y2
(x+y)(x2-xy+x2)= (x3+y3)
(x2+x+1)(x2-x+1)= (x4-x2+1)
(x+y+z)2=x2+y2+z2+2(x+y+z)