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(1-x)2>0 si (1-x)2<0


Răspuns :

(1-x)2>0
2-2x>0
-2x>-2
x>-2/-2
x>1


(1-x)2<0
2-2x<0
-2x<-2
x<-2/-2
x<1

(1-x)2>0                (1-x)2<0 
2-2x>0                   2-2x<0
-2x>-2 |*(-1)             -2x<-2 |*(-1) 
2x<2                           2x>2
x<1                              x>1