Documento 17

EJERCICIO 17

Hallar la suma de:

-5x+x2. 8. 3x+x3 ; -4x2+5 ; -x3+4x2-6.

2. a2+ab ; -2ab+b2. 9. x2-3xy+y2; -2y2 +3xy-x2; x2+3xy-y2.

3. x3+2x; -x2+4. 10.a2-3ab+b2; -5ab+a2-b2; 8ab-b2-2a2.

4. a4-3a2 ; a3+4a. 11 . -7x2+5x-6; 8x-9+4x 2; -7x+14-x2.

5. -x2+3x; x3+6. 12. a3-4a+5;'a3-2a2+6; a2-7a+4.

6. X2-4x; -7x+6;3x2-5. 13. -x2+x-6 ; X3-7X2+5 ; -X3+8x-5.

7. m2+n2; -3mn+4n2; -5m2-5n2. 14. a3-b3; 5a2b-4ab2 ; a3-7ab2-b3.

8. 3x+x3 ; -4x2+5 ; -x3+4x2-6.
2. a2+ab ; -2ab+b2.9. x2-3xy+y2; -2y2 +3xy-x2; x2+3xy-y2.
3. x3+2x; -x2+4. 10. a2-3ab+b2; -5ab+a2-b2; 8ab-b2-2a2.
4. a4-3a2 ; a3+4a. 11 . -7x2+5x-6; 8x-9+4x 2; -7x+14-x2.
5.-x2+3x; x3+6. 12. a3-4a+5;'a3-2a2+6; a2-7a+4.
6. X2-4x; -7x+6; 3x2-5. 13. -x2+x-6 ; X3-7X2+5 ; -X3+8x-5.
7. m2+n2; -3mn+4n2; -5m2-5n2. 14. a3-b3; 5a2b-4ab2 ; a3-7ab2-b3.15. x3+xy2 +y3; -5x2y+x3-y3; 2x3-4xy2-5y3.
16. -7m2n+4n8; m3+6mn2-n3; -m3+7m2n+5n3.
17. x4-x2+x ; x3-4x2+5; 7x2-4x+6.
18. a4+ae+6; a5-3a3+8; as-0-14-
19.xs+x-9 ; 3x4-7x2+6; -3x 3-4x+5.
20. a3+a ; a2+5; 7a2+4a; -8a2-6.
21 . x4-x2y 2; -5x8y+6xy3; -4xy3+y4; -4x2y2-6.
22. xy+x2; -7y2+4xy-x2 ; 5y2-x2+6xy ; -6x2-4xy+y2.23. a3-8ax2+x3; 5a2x-6ax2-x3; 3a3 -5a2x-x3 ; a3+14ax2-x3.
24. -8a2m+6am2-m3; a3-5am 2+m3; -4a3+4a2m-3am2 ; 7a2m-4am2-6.
25. x5-x3y 2-xy4 ; 2x4y+3x2y 3-y5 ;3x3y2-4xy4-y5; x 5+5xy4+2y5.
26. a&+ae+a2 ; a4+a3+6; 3a2+5a-8; -a 5-4a2-5a+6.
27. a4 -b4 ; -a3b+a2b2-ab3 ; -3a4+5a3b-4a2b2 ; -4a3b+3a2b2-3b4 .
28. m3-n3+6m2n;-4m2n+5mn2+n3; m3-n3+6mn2; -2m3-2m 2n+n3.
29. ax-3az-2; 5ax-1+6az-3 ; 7ax-3+ax-4; ax-1 -13ax-3.
30. ax + 2-ax+ax +' ; -3ax + 3-ax-l +a:-2; --ax+4ax+3-5ax+2 ; ax-l-ax-2+ax+2