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y = x² + 12x - 3
a=1 , b=12, c= -3
p=-b/2a
p= -12 / 2*1
p=-6
Δ = b² - 4ac
Δ = 12² - 4*1*(-3)
Δ = 144 + 12
Δ = 156
q = -Δ / 4a
q= -156 / 4*1
q = - 39
y = 1*(x+6)² - 39
y = (x+6)² - 39
// sprawdzenie
(x+6)² - 39 = x² +12x +36 -39 = x² + 12x -3 //