Eseguite le seguenti operazioni e riducete gli eventuali termini simili:

1-

(a + b + c). m - (a + b). m=

2-

2. (x + 3y - 5z) - 3 .(y - 2z)=

3-

(3a + 2b) - (a - b) - a - (5a - 3b)=

4-

3a- (a + b) - 2b- (3a - 2b) - 6ab=

5-

(3a - 2b). (2a - b) - (a + b). (a - b)=

6-

(x - 2). (x - 3) - (x - 4). (x - 5)=

 7

( x+2) .( x-5) -[ (2x-2).(1-x)-4x]=

8-

(3a - 2b + c). (x - y) - (3x + 2y.(a - b)=

9-

-x.(3x-3z)+4.(3-3x)=

10-

(5a - 2b). (3a - b) - 5a- (a - 2b) - 2b. (b - a)=

11-

12-

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

13

15_

(a2 + 2ab + b2) - (a2 - 2ab + b2) + 2a²b2=

16-

2bx- (1 - a) + 2x. (a - b - c) - 2x. (a - c)=

17-

3c-(1-3a) - 3b +c=

18-

11a-(3b-4c-3a-2b)-(3c-4b)=

4

19-

3a- (2a - b) - [a- (6a - 3b) - b- (3a - 5b)]=

20-

3.[(3x-4y)-(3x+4y-3z+2x)]-3 .( 2x+3x)=

21-

3ab-5bc+4ab+4bc+10ab-3bc=

Prodotti notevoli.

                   Calcolate i seguenti prodotti notevoli:

.22-

(a + 3b).(a - 3b);                     (2x + y).(2x - y);                   (3x + 2y).(3x - 2y).

(5x + 3y).(5x - 3y);             (4a + 5b).(4a - 5b)                  (7x + 5y) . (7x - 5y) .