G= ( 3x+2)au carre - (3x+2)(x+7) developper et reduire G factoriser G

G=( 3x+2)²-(3x+2)(x+7)= 9x² +4 +12x -(3x²+21x+2x+14)
=9x²+4+12x-3x²-23x-14
=6x²-11x-10
developper et reduire G
factoriser G
G= ( 3x+2)au carre - (3x+2)(x+7) (3x+2) (3x+2-x-7)
(3x+2) (2x-5)

(9x²+12x+4)-(3x²+21x+2x+14)
9x²+12x+4-3x²-21x-2x-14
6x²-11x-10