Question

as zeros das funções quadrático x2-3x=0

Answer 1

x²-3x = 0
x*(x-3) = 0
x = 0
x-3 = 0 --> x = 3
(0; 3)

Answer 2

Δ = b² - 4ac
Δ = 3² - 4 * 1 * 0
Δ = 9

x ' = (-b + √Δ) / 2a
x " = (-b - √Δ) / 2a

x' = (3 + 3) / 2
x' = 3

x" = (3 - 3) / 2
x" = 0