aidez moi a factoriser merci A= (6x + 7)² - (4x + 3)² B = (8x + 4)² - (4x - 2)² C= (3x + 8)² - 36 D= 36 - (x + 1)²

Bonjour. A=[(6x+7)+(4x+3)]×[(6x+7)-(4x+3)]= (6x+7+4x+3)(6x+7-4x-3)= (10x+10)(2x+4)= 20(x+1)(x+2) ; B=[(8x+4)+(4x-2)]×[(8x+4)-(4x-2)]= (8x+4+4x-2)(8x+4-4x+2)= (12x+2)(4x+6)= 4(6x+1)(2x+3) ; C=[(3x+8)+6]×[(3x+8)-6]= (3x+8+6)(3x+8-6)= (3x+14)(3x+2) ; D= [6+(x+1)]×[6-(x+1)]= (6+x+1)(6-x-1)= (x+7)(5-x)