Sagot :

ayuda

bjr

4x² - 4x - 24 = 4 (x² - x - 6)

soit

Δ = (-1)² - 4*1*(-6) = 25

=> x' = (1+5)/2 = 3

x'' = (1-5)/2= -2

=> = 4 (x - 3)  (x + 2)

ThomasIII

Réponse:

= 2(2x²+2x-12) ou 4(x²+x-6)