2018-2

.........................
.........................
Traiter les questions suivantes: (5pts/question) Treat the following questions:(5pts/question)
I- On considère le polynôme suivant:
I- Consider the following polynomial:
22
( ) 4( 3) 3( 3) 2( 9)P x x x x     
1) Factoriser
()Px
2) Calculer
(2)P
II- Effectuer et simplifier l`écriture:
1) Factorize
()Px
2) Calculate
(2)P
II- Perform and simplify the writing:
2
a) 5 6 2 6 5 2 6
b) 4 90 3 160
III- Montrer l`identité:
III- Prove the identity :
22
2sin cos 2cos sin 5x x x x   
IV- Résoudre le système suivant :
IV- Solve the following system:
3 4 2
1
1
24
xy
xy
I- 
22
( ) 4( 3) 3( 3) 2( 9)P x x x x     
1) 
()Px
2) 
(2)P
II 
2
a) 5 6 2 6 5 2 6 b) 4 90 3 160   
III 
22
2sin cos 2cos sin 5x x x x   
IV 
3 4 2
1
1
24
xy
xy