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Sagot :

Bonsoir,

6x - 7 + 9x + 4 = 15x - 3 → F

- 5x - 3 + 2x - 5 = - 3x - 8 → I

4x² - 3x + 7 + 6x + 5x² + 2 = 9x² + 3x + 9 → N

2 (3x + 5) + 4 (2x - 3) = 6x + 10 + 8x - 12 = 14x - 2 → D

- 3 (4x - 2) - 2 (3x - 4) = - 12x + 6 - 6x + 8 = - 18x + 14 → E

2x (5x + 3) - (8x² + 2) = 10x² + 6x - 8x² - 2 = 2x² + 6x - 2 → E

2 (5x - 3) + 4 = 10x - 6 + 4 = 10x - 2 → L

3 (7x - 5) - (2x + 4) * 2 = 21x - 15 - 4x - 8 = 17x - 23 → X

4x² - 2 - (9x²- 3x + 4) = 4x² - 2 - 9x² + 3x - 4 = - 5x² + 3x - 6 → E

(5x - 3) (2x + 4) = 10x² + 20x - 6x - 12 = 10x² + 14x - 12 → R

4x - 2 (3x - 5) = 4x - 6x + 10 = - 2x + 10 → C

(3x - 2) (- 6x + 4) + 10x² = - 18x² + 12x + 12x - 8 + 10x² = - 8x² + 24x - 8 → I

(4 - 5x) (2x - 8) + 2x² - 3 = 8x - 32 - 10x² + 40x + 2x² - 3 = - 8x² + 48x - 35 → C

5x + (3 - 2x) (2 + 5x) + 4 = 5x + 6 + 15x - 4x - 10x² + 4 = - 10x² + 16x + 10 → E

F  I N   D E  L ' E X E R C I C E

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