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rezolvati ecuatia.... (x-2)la patrat -xpatrat + 8=0

Răspuns :

(x-2)^2-x^2+8=0
x^2-4x+4-x^2+8=0 =>4x=8 => x=2
(x-2)²-x²+8=0
x²-4x+4-x²+8=0
-4x+12=0
-4(x-3)=0
x-3=0
x=3