Question

(X+1) LA PATRAT +3X+5=0

Answer 1

(X+1) ^2 +3X+5=0

x^2 + 2x + 1 + 3x + 5 = 0 
x^2 + 5x + 6 = 0
d. = 25 - 24 = 1 
x1 = -5 + 1/2 = -4/2 = -2 
x2 = -5 - 1/2 = - 6/2 = -3 

s = { -3; -2}