bonsoir
factorisées
7 x
4 ( 2 a - 3 )
( 6 x - 1 ) ( x )
- 2 x + x² = x ( - 2 + x )
12 + 15 x = 3 ( 4 + 5 x )
4 t + 4 = 4 ( t + 1 )
