Bonjour,
factoriser (2x -3)(x +1)+5(-3+2x)
(2x-3) ( x+1+5)
= (2x-3) ( x+6)
factoriser 4x² -16
identité remarquable :
(2x-4) (2x+4)
factoriser (x+1)² -4(x+1)+x(x+1)
(x+1) ( x+1 -4 +x)
= (x+1) ( 2x -3)
factoriser (x+3)(x - 2)+(x+3)(x-1)
(x+3) ( x-2 +x-1)
= (x+3) ( 2x -3)
