Bonjour;
A= (4x - 8) - (3x - 7) + (2x + 3)
= 4x-8 -3x +7 +2x +3
= 3x +2
B= (6x²- 5x + 7) - (4x²- 5x - 5)
= 6x²- 5x + 7 - 4x²+ 5x + 5
= 2x² +12
C= - (3x² - 5x + 2) + (2x²- 2x + 8) - (3 - 2x + 2x ²)
= - 3x² + 5x - 2 + 2x²- 2x + 8 - 3 + 2x - 2x ²
= -3x² +5x +5
Bonne année 2024