Question

x2+4x=0 equaçao 2°graul

Answer 1

x = -4 ± ∛16 - 0   /   2

x = -4 ± 4    /   2

x¹ = - 4 + 4  / 2 = 0 /  2 = 0
x² = -4 - 4  / 2 = -8 / 2 = -4