Bonjour,
1/ x (2x+6) +9 (8x+4) = 2x+6 + 72x +36 = ?
2/ 11x + 6 - 6 (8x-3) = 11x+6 -48x +18 = ?
3/ 3x - 3 - 3 x - 6 (- 4x - 3) = 3x-3-3x+24x +18=?
4/ 4 (- 7x + 2) +3 (- 4x+4) = -28x + 8 -12x +12 = ?
5/ 3x - (x - 4)* 2 = 5/3x -2x +8 =?
6/ 5x + 9 - 9 (- 8x + 9) = 5x+9 + 72x -81 = ?
7/ 9x + 6 - 6 (4x + 5) = 9x+6 -24x-30 = ?
8/ 4x + 9 - 9 (5x - 5) = 2x +9 -35x +45 =?
Je te laisse faire les opérations.
9/ -2x (-4x + 5x) + 2x (-4x -4x)
