vous pouvez m'aider a factorisé x²+x-2 svp

[tex]Bonjour;\\\\\\x^2+x-2=x^2-1+x-1=(x-1)(x+1)+x-1\\\\\\=(x-1)(x+1+1)=(x-1)(x+2)\ .[/tex]

Bonjour,

Factoriser:

x²+x-2= (x-1)(x+2)

Δ = 9

Δ > 0 ; 2 solutions

x1 = (-1 -3) / 2= -2

x2 = (-1+3)/ 2 = 1