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Rezolvati ecuatia :4^2 + (x-1)^2=(x+2)^2.Va rog frumos.

Răspuns :

16+x patrat -2x + 1=x patrat + 4x + 4
16 - 2x + 1 = 4x + 4
17 - 2x = 4x + 4
-2x-4x=4-17
-6x=-13
x=-13/6