Odpowiedź :
a)
f(x) = 2x² + 5x - 3
a = 2, b = 5, c = -3
∆ = 5² - 4 * 2 * (-3) = 25 + 24 = 49
√∆ = 7
x = (-5 - 7)/4 = -3
x = (-5 - 7)/4 = 0,5
b)
f(x) = a(x - p)² + q
p = -b/2a = -5/4
q = -∆/4a = -49/8
f(x) = 2(x + 5/4)² - 49/8
a)
f(x) = 2x² + 5x - 3
a = 2, b = 5, c = -3
∆ = 5² - 4 * 2 * (-3) = 25 + 24 = 49
√∆ = 7
x = (-5 - 7)/4 = -3
x = (-5 - 7)/4 = 0,5
b)
f(x) = a(x - p)² + q
p = -b/2a = -5/4
q = -∆/4a = -49/8
f(x) = 2(x + 5/4)² - 49/8