Page 86 - Mathématiques RAC1 volume 1 2020

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Exercice 6.6 Effectue :

a) (x – 9) =
2
2

b) (4x + 11) (4x – 11) =

c) (2x + 8) (2x – 8) =
2
2

d) (2 – 3x) + (3x – 5) =
2
2

e) (3x – 4) + (4x – 4)(5x + 5) =
2

f) (6x + 6) – (x + 4)(4x + 1) =
2

g) (x + 8) + (5 – 2x)(4x + 1) =
2

h) (6x + 9) – (1 – 2x)(3x – 5) =
2

2
i) (2x – 6) – (–2x – 3)(3x – 4) =

j) (9x – 6) + (1 – x)(4x + 1) =
2

Exercice 6.7 Effectue avec les identités remarquables et réduis :

1) (3a – b) + (3a + b) =
2
2

2) (a + b) – (4a – 2b) + (a + b)(a – b) =
2

3) (5x + 6y) – (3x – y) (3x + y) + (2x + y) (x – y) =
2

ES Nyon-Marens BAMV ed 2020 maths Rac1