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Dragoimaria28
a fost răspuns

Rezolvati in multimea numerelor reale ecuatiile: |1-2x|=|x+4|
|x-3|+|4-x|=1

Răspuns :

BtwDenisa
▪1-2x|=|x+4|
▪1-2x=x+4
▪1-2x=-(x+4)
▪-2x=x+4-1=x+3
▪-2x-x=3
▪-3x=3
▪x=-1
▪1-2x=-x-4
▪1=-x-4+2x
▪1=x-4
▪1+4=x
▪5=x
▪x=5

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