Question

X2 + 7x + 12 = 0 me respondam por favor✋

Answer 1

resposta: x1= -3 e x2=-4

Answer 2

Δ = 49 - 48
Δ = 1

x = -7 +-√1/2
x = -7 +-1/2

x' = -7 +1/2
x' = -6/2 = -3

x'' = -7-1/2
x'' = -8/2 = -4             ok