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współrzędna y wierzchołka paraboli q = 2 3/4
q = -Δ/4a
a = 4
2 3/4 = -Δ/16
11/4 * 16 = -Δ
44 = -Δ /*(-1)
-44 = Δ
Δ = b² - 4ac
a = 4
b = 2
3c
-44 = 2² - 4*4*3c
-44 = 4 - 48c
-48 = -48c /:(-48)
1 = c
współczynnik c wynosi 1