Răspunsuri

2014-07-23T10:28:20+03:00
X compus y=(x+2)(y+2)-2
=> -2 este element absorbant
*-compus
Deci (-2013) *(-2012)*...(-2)
Notam a (-2013)*(-2012)*...(-3)
a*(-2)=(a+2)(-2+2)-2=-2