aider moi d'urgence SVP !!

11/4x(8x-10)=88/4 x² - 110/4 x =22x²-55/2x

(x+9) (3-2x)= 3x-2x²+27-18x= -15x-2x²+27

(3y+5) (10+y)= 30y+3y² + 50 +5y=35y+3y²+50

(z-2) (3-z)= 3z-z²-6+2z=5z-z²-6

5(3g+1) (g-2)=(15g+5) (g-2)= 15g²-30g+5g-10= 15g²-25g -10

(2x-1) (x²+3)= 2x3+6x -x²-3