Odpowiedź:
y = x² + 8x - 14
a = 1 , b = 8 , c = - 14
Δ = b² - 4ac = 8² - 4 * 1 * (- 14) = 64 + 56 = 120
W - współrzędne wierzchołka paraboli = (p , q)
p = - b/2a = - 8/2 = - 4
q = - Δ/4a = - 120/4 = - 30
W = (- 4 , - 30)
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Odpowiedź:
y = x² + 8x - 14
a = 1 , b = 8 , c = - 14
Δ = b² - 4ac = 8² - 4 * 1 * (- 14) = 64 + 56 = 120
W - współrzędne wierzchołka paraboli = (p , q)
p = - b/2a = - 8/2 = - 4
q = - Δ/4a = - 120/4 = - 30
W = (- 4 , - 30)