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Ajutor:
A) 2(x+√2-√5)+3=x(√5-√2)


Răspuns :

2x+2√2-2√5+3=x√5-x√2
2x-x√5+x√2=-2√2+2√5-3
2x+2√2-2√5+3=x√5-x√2
2x-x√5+x√2=2√5-2√2-3
x(2-√5+√2)=2√5-2√2-3
x=(2√5-2√2-3)/(2-√5+√2)