Answered

On considére les expression algébriques: 

b(x)= (12x+14)² - (4x+1)(6x+7)

Developper & Factoriser svp..

Sagot :

b(x)= (12x+14)² - (4x+1)(6x+7)
     =4(6x+7)²-(4x+1)(6x+7)
     =(6x+7)(24x+28-4x-1)
     =(6x+7)(20x+27)
     =120x²+302x+189