f(x) = 2x² + 4x - 6
W = (p, q)
p = -b/2a
q = -∆/4a
a = 2, b = 4, c = -6
∆ = b² - 4ac
∆ = 4² - 4 * 2 * (-6) = 16 + 48 = 64
p = -4/4 = -1
q = -64/8 = -8
W = (-1, -8)
