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Rezolvati ecuatia in Z:
x^2-2x-143=0
Va rog e urgent!


Răspuns :

x²-2x-143=0
Δ=4+4·143
Δ=4+572
Δ=576 =>√Δ=24
x₁=(2-24)/2=-11
x₂=(2+24)/2=13