=12114cam multe...
a)suma de 2module sa fie 0 e necesar ca fiecare sa fie 0
x+1=0...x=-1
2x+2=0...x=-1 nici o contradictie deci x=-1
b)|x-1000|-1214=0
|x-1000|=1214
x-1000=1214...x=2214
si
x-1000=-1214....x=-214
c)
|2-x|-12=0
|2-x|=12
|x-2|=12 amfolosit proprietatea modului ca |y|=|-y|
x-2=12...x=14
si
x-2=-12.....x=-10
d) e asemanator
|x+5|=2
x+5=2.....x=-3
si
x+5=-2....x=-7
