Primera tarea segunda evaluacion 1°5 22/10/09

1.R=

7x^2+11x+24x^1

2.R=

13x^5-7x^3-41x^2+49x^1-31/3x

3.R=

3x-25x^1-x^2/5x

4.R=

4x^4-6x^3-11x^2+7x+x-23/x + 3

5.R=

x^2-x-x-5-10/x-2

6.R=

4x^1/2+12+60/2x-5

7.R=

x-3-4

tercer tarea 1°5 algebra t. mat.04/09/09

1) setenta y tres veces un numero.
R=73x

2)un numero natural dividido por 15
R=x/15

3)la decimosexta parte de un numero
R=x/16

4)la diferencia de 22 y un numero
R=x-22

5)la suma de un numero y 34
R=x+34

6)siete veces un numero menos 5
R=7x-5

7)el tercio de un numero
R=x/3


ll.-RESOLVER LAS SIGUIENTES IDENTIDES

8)(23/12)(15/7)-24x=64-11x

345/84-24x=64-11x
4.1-24x=64-11x
-24x+11x=64-4.1
-13x=59.9
x=-59.9/13
x=-4.6

9)45-(28/5)+33/2=16x

45-5.6+16.5=16x
55.9=16x
-16x=-55.9
x =-55.9/-16
x=3.4

10)((11/3)(45/7)/(26/9)(14/3))x+25-18=33

(495/21)/(364/27)x+7=33
13365/7644x=33-7
1.74x=26
x=26/1.74
x=14.94

11)625-34+(256/4)+42x=758-16/3

591+64+42x=758-5.3
655+42x=752.7
42x=752.7-655
42x=97.7
x=97.7/42
x=2.38

12)((28/6)(47/3))x+(-2)(-4)(3)-(-2)(-3)(4)(6)=16

1316/18x+24-144=16
73.1x-120=16
73.1x=16+120
73.1x=136
x=136/73.1
x=1.8

13)((17/4)(16/2)/(55/4))+25-18=44-33x

(272/8)/(55/4)+7=44-33x
1088/440+7=44-33x
2.4+7=44-33x
9.4=44-33x
33x=44-9.4
33x=34.6
x=34.6/33
x=1.04

14)(11/18)-23+2x=-17x+29-(13/21)

0.6-23+2x=-17x+29-0.6
-22.4+2x=-17x+28.4
2x+17x=28.4+22.4
19x=50.8
x=50.8/19
x=2.6

15)1236-458+478-158x=457+(-2)(6)(7)(11)

1256-158x=457-924
-158x=-467-1256
-158x=-1723
x=-1723/-158
x=10.9

segunda tarea del 1°5 T.MAT. ALGEBRA 28/08/09

1.-((3/5)/(16/9)x+12x-36=
con x=-2

((3/5)/(-32/9)-24-36
-27/160-24-36
-27-3840/160
-3867/160-36/1
-3867-5760/160
=-9627/160

con x=2
((3/5)/(32/9)+24-36
27/160+24-36
27+3840/160
3867/160-36/1
3867-5760/160
=1893/160

2.-13x-35+2/7-15/8
con x=-3

-39-35+2/7-15/8
-74+2/7-15/8
(-518+2)/7-15/8
-516/7-15/8
(-4128-105)/56
=4233/56

con x=3
39-35+2/7-15/8
4+2/7-15/8
(28+2)/7-15/8
30/7-15/8
(240-105)/56
=135/56

3.-21x-16x-18+23-65+79-45x
con x=-4

-84+64-18+23-65+79+180
-20-18+23-65+79+180
-38+23-65+79+180
-15-65+79+180
-80+79+180
-1+180
=+179

con x=5

105-80-18+23-65+79-225
25-18+23-65+79-225
7+23-65+79-225
30-65+79-225
-35+79-225
+44-225
=-171

4.-((9/8)(7/14)/(23/6))x+(1/5)x-19
con x=-6

((63/112)/(23/6))x+(-6/5)-19
(378/2576)x-6/5-19
2268/2576-6/5-19
(11340-15456)/12880-19
-4116/12880-19
(-4116-244720)/12880
=-248836/12880

con x=3
((63/112)/(23/6))x+(3/5)-19
(378/2576)x+3/5-19
1134/2576+3/5-19
(5670+7728)/12280-19
13398/12280-19
(13398-233320)/12280
=-219922/12280

5.-(23/4)(65/6)+(2/3)x-16/5)x+22
con x=5

1495/24+10/3-80/5+22
(4485+240)/72-80/5+22
4725/72-80/5+22
(23625-5760)/360+22
17865/360+22
17865+7920/360
=25785/360

con x=-7

1495/24-14/3-112/5+22
(4485-336)/72-112/5+22
4149/72-112/5+22
(20745-8064)/360+22
12681/360+22
12681+7920/360
=20601/360

primer tarea 1°5 T.MAT. 21/08/09

1.-R=(6)(-5)(-2)(-7)(8)
(6)(10)(3)(-7)(8)
(6)(10)(-21)(8)
(6)(10)(-168)
(60)(-168)=-10080

2.-R=(5)(-5)(3)+2+4-7-12+45-33+75
(-25)(3)+2+4-7-12+45-33+75
-75+2+4-7-12+45-33+75
-127+126= -1

3.-R= -134-12+13+54-65+67(2)(-3)(4)
-134-12+13+54-65+67(-6)(4)
-134-12+13+54-65+67(-24)
-134-12+13+54-65-1608
-1819+67=-1752

4.- R=12-44+36-76+89-55+243-74
380-249= 131

5.- R= 0

6.- R=((12/5)(6/3))+((4/9)(8/11))
72/15+32/99
( 7128+980)/985= 8108/985

7.-R= 14/3+15/2-6/4
(28+45)/6 -6/4
73/6-6/4
(292-36)/24=256/24

8.-R= (((12/5)(15/4)/(13/7)(16/9))(-5))+1/2
(((60/20)/(208/63))(-5))+1/2
((3780/4160)(-5))+1/2
-18900/4160+1/2
(37800-4160)/8320= 33640/8320

9.-R=(13/22)/(43/15)-16/7
195/946-16/7
(1365-15136)/6622= -13771/6622

10.-R=((9/8)(8/9)/(25/4))+((13/45)(45/2))-16/4
((1/1)(25/4))+585/90-16/4
4/25+585/90-16/4
(360+14625)/2250-16/4
14985/2250-16/4
(59940-36000)/9000= 23440/9000

11.-R= (33/17)(45/12)+3/5-18/7+16/9-25/5
1485/204+3/5-18/7+16/9-5
(7425+612)/1020-18/7+16/9-5
8037/1020-18/7+16/9-5
(56259-18260)/7140+16/9-5
37999/7140+168/9-5
(341991+114240)/64260 -5
456231/64260-5
(456231-321300)/ 64260= 134931/64260

primer tarea algebra 1a 6 t. mat. 20/08/09

primer tarea algebra 1a 6 t. mat.