3. 18ab5cd+5m2+4cm. 4. 13 a2b2+8 m2-18 m n +36 +4xy. 5. 16bc-3ab+5 ac+12cd+4mn +10 an. 6. 8a-8b+c-17 d +25. 7.-8a6c-109d+31e-10f+g. 8. 17 a2b-13 ab2-10 ab 18 c3 d-10 d4-12 m2 n + 11 m n2+mn. 9. 8a3+1463-7 b x2 — 8 c x2 — x2 + 13x-9 h y2-2k ya -5ky-9hy +7 py2. SECTION X. ART. 27. 1st, 2d, performed. 3. 3ab2c2 +3bc. 4.6ac6ab+9bc7cd-12 am. 5. 8m-6x-f-3d-8. ART. 28. 1. 18 a2x-6bc+10x2-ax+b—6. 2. 10 a 23-36 a2 x2 +49 a3 x-6 a1. 3. 26 ab-18 b c2 +26 b2 + c2 — m2 x + 47. 4. 7a2xy-8bx2y +30 cx y2-29 y5. — 5. 18 x2 y2+48 x y +4 b2 c2 + c ď3 + c3 d+m. ART. 29. 1. am (bc- - dm). 2. abc-d2-(3my — xy). ' 3. a+b (c+d). ART. 31. SECTION XI 1st, 2d, 3d, performed. 4. 2 a2+5a-12. 5. a1+4b4. 6. 37 a2 b c2-12 a2 c4+22 a c1 d2-21 a2 b2-26 a b c2 da 8 c4 d4. 7. 126 a6 c2+30 a3 b c2-36 62 c2+108 a3 cx y2-28 a3 cx2 y +33a3c3+72bcxy2+12b cx2y-24bc3-24x3 y3+2 c2x2y +36 c2 x y2-3 c4. aa ·17 8. 3 a6b-10 a5 b2+17 a4 63-17 a3 b48 a2 b5 — a b6 9. 42 65-217 63 c2-11 b2c3+8bc4-2c5. ART. 32. 4. 2 a2b2b2c+2c3. 5. 7x3x2y-12 x y2-6 y3. 6. 10 a cx+2a2c+5abc+2x+6a+8 b. 7. 4abc+2 a2 d+2b2 d. 8. 4 ax2-4 a xy + ac2 + 4 bx2-4 bxy+b c2-a3 c2 m - ac2 x y + a3 d2 m+a d2 xy-a2 c2mx-c2x2 y + a2 d2 m x + d2 x2 y. 9. 13 63 c2 x-8 62 c3 x2+18 c5 x2. b2 x2. a2 10. 112b-4bx+a2 b+448-16x+14 a2+6a2bc7 a2 c2. ART. 40. 1. Performed. 2. 4 a2 b c d. 3. 5 a2 b3 c d. SECTION XII. 4. 12 66 h3 5. 25 m5 y6. 6. 31 a2 b2 m2. 9. a2+4 a3 x + 12 a2 x2 + 16 a x3 + 16 x1. 11.5a2+4ab3b2. 12. m6+m5x+ m2 x2 + m3 x3 + m2 x2 + m x5 + 3., 13. 5 a3 b2c3 — 2 a2 b2 c4. ART. 46. y8. 1. x8+xïy+x¤ y2 + x5 y3 +x1 y2+x3 y5 + x2 y°+ x y2+ 2. 81 a1+ 108 a3 b + 144 a2 b2 + 192 a b3 +256 b4. ! 3. x9x8y + x7 y2 — x6 y3 + x5 y1 — x1 y3 — x3 yб — x2 y2+ 4. 1 — m+ m2 — m3 +m1 — m3 + mo — m2. 8. a—axy+a x2 y2 — a x3 y3 + a xa y1 — a x5 y5 + m12 1 - m2 ахбуб 1+xy ART. 47. 1. a2. 2. (m + 1)(a+b). 3. 2(x2 + x + 1) (a + m). 4. (a+b)(x2-x y + y2). 5. 9 (m2-n2) (x1 — x3 y + x2 y2 — x y3 + y1). 6. 3m (x3 — y3) (m2+n2). 7. 5 (m2-1) (x4 — x3 + x2 — x + 1). 9. 50 a x3 +26 a x2 y + 125 a x1 + 65 a x3 y |