URGENCE ;( ;( factoriser : 4y*y+8y+4 y+(3y+2) 4y(y+2) 3y-(y-4) 16y+4 9-72y 12-8y -6y-18 9y+6 42-14y

4yxy+8y+4 = 4(y+1)²

y+(3y+2)= 2(2y+1)

4y(y+2)= 4y(y+2)

3y-(y-4)= 4(y+1)

16y+4= 4(4y+1)

9-72y= -9(8y-1)

12-8y= -4(2y-3)

-6y-18= -6(y+3)

-9y+6= -3(3y-2)

42+14y= -14(y-3)