Odpowiedź :
x₁ = –5
x₂ = 2
f(4) = 36
f(x) = a(x – x₁)(x – x₂)
36 = a(4 – (–5))(4 – 2)
36 = a · 9 · 2
36 = 18a
a = 2
f(x) = 2(x – (–5))(x – 2)
f(x) = 2(x + 5)(x – 2)
x₁ = –5
x₂ = 2
f(4) = 36
f(x) = a(x – x₁)(x – x₂)
36 = a(4 – (–5))(4 – 2)
36 = a · 9 · 2
36 = 18a
a = 2
f(x) = 2(x – (–5))(x – 2)
f(x) = 2(x + 5)(x – 2)