Réponses

2013-04-03T13:57:28+02:00

(8x+(-8))(4x+(-7)-(-5+9x)(3x+(-9)

(8x-8)(4x-7)-(-5+9x)(3x-9)

8x*4x+8x*(-7)-8*4x-8*(-7)+5*3x+5*(-9)-9x*3x-9x*(-9)

32x²-56x-32x+56+15x-45-27x²+81x

5x²+8x+11