ANSWERS. Note. In the following collection of answers, all those are omitted which, if given, would destroy the utility of the example. 4. 35 and 7. 5. A, 31; B, 37. 6. A, $536; B, $664. 7. $0.93. 12. Horse, $275; 13. 15, 45, and 48. 8. A, $20; B, $60; C, $180, 9. 52 and 73. 10. 13, 39, and 46. 11. A, $28; B, $43; C, $56. carriage, $100; harness, $25. 14. 35, 70, and 105. 15. Cow, $45; sheep, $18; hog, $12. Art. 57; page 19. 4.2a-26+2d. 6. 4α2. 7. 2a2- ab. 8.5x-8x2-6. 9.6mn-ab-4c-x+3m2. 10. х-бу. 11. -x+3m-7n. 12. -x+3x+2. Art. 64; pages 22 and 23. 7. -4abc-14x-2y-148. 11.4m-8n-r+3s. 6. 4ab. 10. 6b+1. 25. 5x2+ 6 ху — 7 у2 — 6 х — 7у+6. 27. 4x2+9x2y - 4 xy2 - 3y. 28. 4α2+7° – 2α - 4. 8. b3 - α3. 11.6x-16x2y +6 xy2+4y2. 9. 10ab2-3ab2-18 a2b4. 12. 2m2 - 8 m3n + 18 mn3. 14. 30 α3 - 43 a2b + 39 ab2 — 2063. 13. x2+4x+3. 15. 8x – 14x2 - 18x + 21. 16. α2 – b2+2bc - c2. 17. 2x2 - x + 8x - 5. 18.6 x2+13x3 – 70x2 + 71 x - 20. 19. 6 x2 - 19x + 22x+5. 20. - 5-37m2+70m-50. 21. - 65 - 25x2 + 7x +81 x2 + 3x - 28 с-28. 22. 2ab2 - 3a*b3 - 7ab+ +4 a2b5. 23. 4x2m +7 y3 - 16 xm+6yn+1 +12x5y2n-1. 24. x2 + xy2 + y^*. 25. 16a2+4 a2b2 + b2. 26. 12x+7x+5x+10x-4. 27. m2 - 3 m3n + mn5 - 3 no. 28. 2435 - 81 x2y - 3 xy + y. 29. α5-5ab + 10 ab2 — 10 a2b3 + 5 ab2 — . 30. x + y + z3 - 3 xyz. 31. 6x – 11 x + 14x2 - 12x + 6 x2 - 23 x + 5. 2. a2+b2+c2+d2+2ab+2ac+2ad +2bc+2bd+2cd. 3. ab + ac — 2 ad - 2 bc + bd + cd. 4. x2. 5. 4ab+4bc. 7. a2-2a2b2 + b2. 9.4a+2a2+2α3, 6. 62. 8.1-x. 10. х2-4ху+4y2-9z2. |