Question

2x(3-x)=4x. Przykład z równań

Answer 1

2x(3 - x) = 4x
6x - 2x² - 4x = 0
-2x² + 2x = 0
a = -2, b = 2, c = 0
Δ = b² - 4ac = 2² -4 *(-2) *0 = 4 + 8 * 0 = 4 
√Δ = 2
x1 = (-b -√Δ) / 2a = (-2 -2) /2 *(-2) = -4  /(-4) = 1
x2 = (-b + √Δ) / 2a = (-2 + 2) /2 * (-2) = 0 / (-4) = 0