Exercice 3 On considere les expression H= (4x+5) (x-2) -x (x+4) J = (3x-10) (x+1) En devellopant et reduisant H et J, verifier H = J

Question

Mathématiques Publié : 2014-11-16 Mis à jour : 2021-08-18 nanaadu13014

Question

Exercice 3 On considere les expression
H= (4x+5) (x-2) -x (x+4)
J = (3x-10) (x+1)
En devellopant et reduisant H et J, verifier H = J

Answer 1

H= (4x+5) (x-2) -x (x+4)
h = 4x²-8x+5x-10 -x²-4x
h = 3x²-7x -10

J = (3x-10) (x+1)
j = 3x²+3x-10x-10
j = 3x² -7x -10

donc H=J

Answer 2

H= (4x+5)(x-2)-x(x+4)
= 4x² -8x+5x-10-x²-4x
= 3x²-7x-10

J= (3x-10) (x+1)
=3x²+3x-10x-10
=3x²-7x-10

H=J