bonjour

1/3 x² + 5/5x - 1/3x + 22/29 + 2/3 x²- 1/15x + 4/3x + 7/29

= x² (1/3+2/3) + x (5/5 - 1/3 - 1/15 + 4/3) + 22/29 + 7/29

= x² + x (1 - 1/3 + 4/3 - 1/15) + 29/29

= x² + x (1 + 3/3 - 1/15) + 1

= x² + x (1 + 1 - 1/15) + 1

= x² + x (2-1/15) + 1

= x² + x * 29/15 + 1

= x² + 29/15x + 1