Réponses

2013-12-03T17:50:05+01:00
(4z+3)²
(4z+3)(4z+3)
16z²+12z+12z+9
16z²+24z+9

6+(5y-2)(3-4y)
6+(15y-20y²-6+8y)
6+15y-20y²-6+8y
-20y²+23y

5z-(4z+3)(-2z-5)
5z-(-8z²-20z-6z-15)
5z+8z²+20z+6z+15
8z²+31z+15

6(2x-1)(3-x)
(12x-6)(3-x)
36x-12x²-18+6x
-12x²+42x-18