Réponse :
6 × x= 6x
( - 3 ) × x = -3x
5 × x × ( - 4x ) = -20x²
x × ( - x ) = -x²
x × ( - 7 ) × ( - x ) = 7x²
( - 5 ) × ( 2x – 7 ) = -10x+35
( + 6 ) × ( x + 3 ) = 6x+18
3x × ( - 5x ) = -15x²
3x + ( - 5x ) = -2x
- 3x – 5x = -8x
Explications étape par étape :