Mathématiques 2: Algèbre:
   Exercices de révision:
      Expressions algébriques

Réduire  les expressions algébriques suivantes : 


 x + 5y + 3x - 7y 

 - a - 6a + 4a - 10b  + b 

 5x + 4 + 2x - 3

 4x2 - 2x + 8x2 + 5x

2.5 x + 1.5 y - 1.3 x + 3.5 y

3x2 + 7x  - 1 + 5x2 - 5x + 1

 4a2b + 5ab - 3a2b - 4ab

 1.5 x2 - 1.2 x - 5.5 x2 + 5.2 x

 - 4x3 + 7x2 + 5x3 - 5x + 6x2 - 3x

 (2x - 4y + 3) + (- 4y + 2x - 3) 

(3x2y + 7y2) - (- 3y2 - x2y) 

- 4xy (2x + 2y) 

(2x/3 + 7) - (5x/9 + 1) 

(3x - 2)(x + 5) 

(2x - 5y + 7) - (4 + 5y - x) 

(3x - 8)(x + 1) 

9a - 2bc - 3a - 5cb 

4ab - 3c + 2ba - c 

- 3ab + 5a - 4ba - 2a + 4 

- 2x - 5y + 3y + 8x 

8x + yx - 5x - 2xy 

7mn + 6 - 4nm - 8 + 3n 

12 - 5xy + 69yx - 5 

3 - 4a - 5 + 12a 

5b - 7a + 7b + 4a 

xy - 5a + 5yx - a 

(4ab)(- 6a2 b2)

(2 + 7abc - 2 - 9abc + 1)(3) 

(- 3a2 b4)(- 9a2 b6) 

 -6a x2(2a3 + 5b4) 

 7 xy3(x - 4y2) 

 - 5x3y2 + 8(3x3y4 + x) - 3x 
 
 (6x2y5)(- 3x2)(2y2)

 5(2a - 4b - c) - 7(2a + 4b - 2c) 
 
 (- 4a3 b5)(8bxy2)(- 2xy) 

 (4 x4 y2)(- 2xy) + (- 5x4 y2)(2xy) 

 4x4(6 x3 + 3x3y - 5) 

(3x - 7)2 

(4xy)(- 5x)(- 2xy2 ) 

 (4x – 1)(2x + 3) 

(2x + 3)(7x - 5) 

(2x – 4)(3x +1)

 6x2 - 3x – 2

 (8x + 1)(- 5x – 3)

(5x + 1)(5x + 2) 

(x + 2)(- 3x + 1) 

(5x – 4)(5x + 7) + (8x - 1)(3x + 7) 

(5x – 2)(x + 3) + (3x + 1)(3x + 2) 

(13x + 2)(3x – 10) 

(x - 1)(x2 + x + 1) 

(4x2y3 - 6xy2) ÷ (- 4xy/3) 

- 4xy/5(10x2y - 5y)

8x5y3 ÷ (- 4xy) 

(35x4y2 - 40xy3) ÷ (-5xy2)