Réponse:
G = - 4 ( x + 2 ) - ( x + 2 ) ( 2x - 3 )
- 4x - 8 - ( x + 2 ) ( 2x - 3 )
- 4x - 8 - ( 2x² - 3x + 4x - 6 )
- 4x - 8 - ( 2x² + x - 6 )
- 4x - 8 - 2x² - x - ( - 6 )
- 4x - 8 - 2x² - x + 6
- 5x - 8 - 2x² + 6
- 5x - 2 - 2 x²
H = ( 3x - 8 ) ( x - 2 ) + ( 5x - 7xx - 2 )
( 3x - 8 ) ( x - 2 ) + 5x - 7x² - 2
3x² - 6x - 8x + 16 + 5x - 7x² - 2
3x² - 14x + 16 + 5x - 7x² - 2
3x² - 9x + 16 - 7x² - 2
- 4x² - 9x + 16 - 2
- 4x² - 9x + 14
I = ( 2x - 3 ) ( x + 1 ) + 5 ( 2r - 3 )
2x² + 2x - 3x - 3 + 5 ( 2r - 3 )
2x² - x - 3 + 5 ( 2r - 3 )
2x² - x - 3 + 10r - 15
2x² - x - 18 + 10r
J = ( 2r - 1 ) - ( 2x - 1 ) ( r + 3 )
2r - 1 - ( 2xr + 6x - r - 3 )
2r - 1 - 2xr - 6x - ( - r ) - ( - 3 )
2r - 1 - 2xr - 6x + r - ( - 3 )
2r - 1 - 2xr - 6x + r + 3
3r - 1 - 2xr - 6x + 3
3r + 2 - 2xr - 6x
