mailysdesirat
Answered

Merci de m'aider :) svp
Consigne= Factoriser les expressions suivantes:
A= (7x - 2)² + (5x - 6) (7x - 2)
A= (..............) (..............) + (5x - 6) (7x - 2)
A= (7x - 2)..................................................
A=................................................................

B= (2x - 5) (x + 10) + (2x - 5)²
B=...................................................
B=...................................................
B=...................................................

Sagot :

Teamce

Bonsoir,

Factoriser les expressions:

A = (7x - 2)² + (5x - 6)(7x -2)

A = (7x -2)(7x - 2) + (5x - 6)(7x - 2)

A = (7x - 2)(7x - 2 + 5x - 6)

A = (7x - 2)(12x - 8)

A = 4(3x - 2)(7x - 2)

B = (2x - 5)(x + 10) + (2x - 5)²

B = (2x - 5)(x + 10) + (2x - 5)(2x - 5)

B = (2x - 5)(x + 10 + 2x - 5)

B = (2x - 5)(3x + 5)

Bonne soirée.