Bonsoir j’aimerais factoriser cette expression



(5-2y)(y+7)-(2y-3)(5-2y)


Sagot :

Bonsoir,

(5-2y)(y+7)-(2y-3)(5-2y)

(5-y) ( y+7 -2y +3) =

(5-2y) ( -y +10)

=(5-2y) [(y+7)-(2y-3)

=(5-2y) (y+7-2y-3)

=(5-2y)(-y-4)

La factorisations de l'expression (5-2y)(y+7)-(2y-3)(5-2y)= (5-2y)(-y-4)