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Multimea solutiilor ecuației (x-2)^2-7=2

Răspuns :

[x-2]²=9
[x-2]²=3²;
⇒x-2=3⇒x=5;
⇒solutia ecuatia este x=5;
⇒A=[5];
[tex]\rm (x-2)^2-7=2\\\\(x-2)^2=2+7\\\\(x-2)^2=9\\\\x-2=3\\\\x=3+2\\\\\boxed{x=5}[/tex]