Question

Rezolvati in multimea nr reale eciatia : x+1=5.
( x+1 este sub radical)

Answer 1

se scoate x+1 de sub radical
|x+1|=5 => x+1=5 => x=5-1 => x=4
x+1=-5 => x=-5-1 => x= -6
x ={4, -6}