20140828125950

RESPUESTAS0 539EJERCICIO 19 . 1.2y-8 ; 0 . 2.-6x 2+10x-72 ; -172. 3 . -x 4+7x 3y-5x 2y2+10xy 3-y 4-8 ;3811 . 4 . 9rn-45n+2 ; -1. 5 . 10nx-3ab-cn-5 ; -15. 6 . -4a3+2ab 2-2b 3+8 ; -42 .1152 .7 . 27m3+m2n+22mn2+125n3-8 ;8 .3xa-1 +2yb-2 -3mx-4 ; 21 . 9 . m.-3 ; 4-.5 910 . x 4 +6x3y-4xy 3-y 4+2 ; 2091 . 11 . a2-áab+vb 2 ; 6 . 12 . 17m2-45mn+g4n2~-3 ; -2io .13 .á b2m+-cn+8 s ; 16 - 5 3 . 14 . -0.la 2b+ab 2+0 .1b 3+6 ; 25 .550EJERCICIO 20 . 1 . -13 . 2 . -11 . 3 . -3 . 4 . 3 . 5 .8 . 6 . 2a-3b . 7 . 3b-2 .8 . 4x-6b . 9 -5a-6b . 10 . 3-8x . 1 1 . -9a 2-5b 2. 12 . 5yz-7xy . 13 . -a . 14 . -14m 2 .15 . -5x 2y . 16 . 18a8m2 . 17 .0 . 18 . 77x 2y . 19 .0 . 20 . 3az 1 1-5bx +2 . 21 . -8xa+ 2-11 .22 . lla ° . 23 15ax-1 . 24 . 140b-1 . 25. 25ma . 26 . 5 . 27 . - 1-' . 28 . X2 . 29 . 4-° x 3y .12 303 0 . -ab 2 . 31 . -5 . 32 . 8 . 33 . -3 . 34 . 9 . 35 .0 . 36.5+2a . 37 . -b-3x.38 . -5m-2n. 39. 6a+3b . 40 . 5a3+8b . 41 . 9-7a . 42 . 25ab+25 . 43 .4a . 44 . -b .45 . 65x3 . 46 . 64a 2 b . 47 . -lla 2y . 48 . -10ab . 49 . 0 . 50 . -4ax . 51 . 318ax +1 ,52. 96mx . 53 . -49ax -1 . 54. -217ma . 55 . -139ax+ 2 . 56 . 6a+ 1. 57 . 18 . 58 . - 48m 3 .4 8 4059 . 7a 2 ó 2 . 60. -45s 3 b 2 .EJERCICIO 21 . 1 . 2b . 2 . 3x-5y . 3 . lla+b-4 . 4 . x 2+2x-6 . 5 . a 3-8a 2b-9ab2.6 . 0 . 7 . 2x+2y-2z . 8 . -2x 2+xy+2y 2. 9 . x 3-6x 2+4x . 10 . -2y 4+6y 3+4y 2-6y-8 .11 . a 3- 15a2b-6ab 2+17a-5 . 12 x 4+8x 3y+6x 2y2+9xy 3-31y 4 . 13 . 2a+2b .14 . -7ab+6ac+2cd-10de . 15 . -5x 3+17x 2 - 30x+24 . 16 . y5+lly 4 -40y 3+14y 2+19y-31 .17 27m 2n-22mn2-9n 3+18 . 18 . x 4+29x 3y-38x 2y2+32xy 3 +y4 . 19 . m 6+m 4n2+13m 3 n 8+21rn 2n4-16mn 5+80 . 20 . 8a6-a 5b+11a4 b2 +6a3 b 3+11a 2 b 4-18ab 5-9b°+42. 21 . x 6-6x5-7x 4-x 3+29x 2-12x+25 . 22 . 8x 5+28x 4y+101x3 y 2-6x 2 y 3-9xy 4+y5-98 . 23, m°+23m 5n-8m 4 n 2-14m3 n 8+21m2 n 4 +18mn 5-8n° +22 . 24 . x 7+8x 8+16x 5-25x 4+30x 3-23x 2-59x+3 .25 . 9a°-25a 5 b- •5 3a3 b 3+31a2 b 4+9ab 5-4b 6+14 . 26 .-4ax+7ax+ 1 . 27 -3ma+ 1 +5ma--m a-l-2rna-2-8ms -3 . 28 . am+ 4 +5a°m+8 +7am+2+11am+1-8am+14am -1 . 29 . xa+2 +11xa+ 1 - 26x 1-36xa-1+25xn -2 -60xa- 3 . 30 . m n+1- 87,1n -llm n-2 +2m °-3-mn -4-28m" -5 .EJERCICIO 22 . 1 . -2a+2b . 2. x+4y . 3 . -2a-b+5 . 4 . -2x 2+5x+6 . 5 . -x 3+x 2y+6xy2 .6 . 8a3+a 2b+5ab 2 . 7 . -2a+3b-5c. 8 . 3m-2n+4p. 9 . 2x+2y-5z . 10 . -2a 2+7ab+b 2 .11 -6m 2+9mn . 12 . X8-8X2 +6x-10 . 13 . -m 3-8n+7 . 14 . 7ab+6bc . 15 . a "-34a 2b+8ab 2 .16 6x 3-8x 2y-7xy 2+6y 8-4 . 17 . -16n+19c-d+14 . 18 . Sal +2a 3b+8a 2 b 2-45ab 3+5b 4 .19 . x 5-8x 4-6x 3+19x 2+9x+22 . 20 . -x5- 8x 3y2+x 2 y 3-9xy 4-44y 5+18 . 21 . 11x 5-6x4-24x 3+26x 2-10x+37 . 22 . a 5-8a4b-27a 3 b 2+15a 2 b 3+53ab 4-b 5+14 . 23 . y6+15y5-8y4-22y 3+y 2+8y+14 . 24 . x 8-7x 7-x °-5x5+3x 4+23x 3-5x 2-51x-45 . 25 . x 7 -3x 5y2+95x 4y8-90x 3 y 4-7x 2y 5 +50xy6-y 7+60 . 26 . a x +3-ax+2-3a x + 1+6ax-5 . 27 . -15a " -8an -1 +10an -2 +16an-4.28 . xa+ 4 +15xai 3 +14xsi 2-31xi+1- 6xa+59xa -1 . 29 . a m +14am -1 -33am-2 +26am-3 +8a m-4+14am-5 .3 ;) . in x+ 4 -15mx+ 3+23mx+2+56mxa 1-14mx-5mx- l+8,nx -2 .EJERCICIO 23 . 1 . 2-a . 2 . 8-a . 3 . -a 2-3a-4 . 4 . x 2-5xy . 5 . -a 3+a 2b-ab 2+1 .6 . 2x 8+8x 2y+6xy2. 7 . a 8+8a 2b-6ab2+b 8. 8 . y 4+8xy 8 -7x2y 2+5x 3y . 9 . a 4-a 8m-7a2m2+18am 3-4m4 . lo . a-b-c-d+30 . 11 . x 2-xy-y 2-1 . 12 . a 3-5a2b+8ab 2-b 3+6 .13 . x 3+jx 2y-17xy2+y 3+5. 14 . x 4-9x 3y+8x 2 y 2+15xy 3-1 . 15 . a 5 +11a4b-8a3 b2-2a 2b3+4ab 4 +b 5 . 16 . x 4-5x 3+x 2+25x+50 . 17 . y °-9ys-17y 4+y 3-18y 2+y-41 . 18 . a°+15a5b+9a 4 b'2 -17aTb 3+a2 b4+14ab 5+b °. 19 . x 4+x 8+x 2-16x+34 . 20 . m3-m2n-7mn 2+3n3-1 .EJERCICIO 24. 1 . 4 a 2+ 1- ab-5 2 . 5xy-3 z+15ó. 3 . 4ab+áóbc+ 9cd .34 . - 3 8 b+-L5 _ 19 8 5 1 3 19 1 -' 110a- 9 2 . 5 . 9 x2 7xy 40y 2+ 1 . 6 . 8m 3+-m 2n- 8mn2+4 n 3 . 7 . 14 eab-3 b2+ 1 8 89x2+ 1T x 21 29 a3+15a2-19a-1 10 . m 3 + 5 m 2n+ 1 mn2-lln3+ 15 8 40 15 y-10 8 10 24 _, 30 7 311 . -?x4+ 4x3ysx2y2 z1 xy3 a * . 12 . a+ 20 b-c+d-B.