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Rezolvati in R ecuatia :√2 (x-1)+1=x

Răspuns :

√2x-√2 +1=x
√2x - x=√2-1
=>x=1
√2x-√2+1=x
√2x-x=√2-1
x(√2-1)=√2-1
x=(√2-1):(√2-1)
x=1