Question

x^2+5x+6=0 Equação de segundo grau

Answer 1

X ² + 5X + = 0

X² + 3X + 2X + 6 = 0

X • (X + 3) + 2X + 6 = 0

X • (X + 3) + 2 (X + 3) = 0

(X + 3) • ( X + 2) = 0

X + 3 = 0

X + 2 = 0

X = - 3

X + 2 = 0

X = - 3

X = - 2

X1 = - 3 , X2 = - 2