(x+3)(2x-1)-5(2x+8)= (3x-1)(4x+3)+(2x+2)(x-6)= (9x+5)(x+6)-(8x-3)(4x+5)=
Mathématiques
dbz94200
Question
(x+3)(2x-1)-5(2x+8)=
(3x-1)(4x+3)+(2x+2)(x-6)=
(9x+5)(x+6)-(8x-3)(4x+5)=
2 Réponse
-
1. Réponse JULIE07
(2x²-x+6x-3)-10x-40= 2x²+5x-3-10x-40= 2x²-5x-43
-
2. Réponse sevdan1991
(x+3)(2x-1)-5(2x+8)= 2x²-x+6x-3-10x-40=2x²-5x-43
(3x-1)(4x+3)+(2x+2)(x-6)= 12x²+9x-4x-1+2x²-12+2x-12=14x²+7x-13
(9x+5)(x+6)-(8x-3)(4x+5)=9x²+54x+5x+30-(32x²+40x-12x-15)=9x²+54x+5x+30-32x²-40x+12x+15=41x²+31x+45