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urgent va rog!

Determinati x astfel incat |x-1|+|(x-1) (x+2)| = 0


Răspuns :

|x-1|+|(x-1)(x+2)|=0 <=> |x-1|+|x-1|*|x+2|=0 <=> |x-1|*(1+|x+2|)=0 <=> |x-1|=0 <=> x-1=0 <=> x=1.