Răspuns :
x* (√2+1)/(√2-1)=2+√8
x*(√2+1)/(√2-1)=2+2√2
x*(√2+1)/(√2-1)=2(1+√2)
dar √2+1=1+√2≠0, deci putem imparti prin el in stanga si in dreapta
x/(√2-1)=2
x=2(√2-1)
x*(√2+1)/(√2-1)=2+2√2
x*(√2+1)/(√2-1)=2(1+√2)
dar √2+1=1+√2≠0, deci putem imparti prin el in stanga si in dreapta
x/(√2-1)=2
x=2(√2-1)