Răspunsuri

2014-06-05T17:28:55+03:00
1. xo(yoz) =
xo(yz+4y+4x+12)=
xob=
xb+4x+4b+12=
x( yz+4y+4z+12)+4x+4(yz+4y+4z+12) +12= xyz+4xy+4xz+12x+4x+4yz+16y+16z+48+12=
xyz+4xy+4xz+4yz+16x+16y+16z+60


2 (xoy)oz=
 (xy+4x+4y+12)oz=
aoz=
az+4a+4z+12=
(xy+4x+4y+12)z+ 4(xy+4x+4y+12)+4z+12=
xyz+4xz+4yz+12z+4xy+16x+16y+48+4z+12=
xyz+4xy+4xz+4yz+16x+16y+16z+60

3 3 3