PRIMERA TAREA DE 2° EVALUACION

1) 44x^3 + 66x^2 - 148x - 156 / 6x =
7X^2+3/6X^2+11X-24
2) 39x^6 - 21x^4 - 12x^3 + 149x - 93 / 3x =
13X^5-7X^3-4X^2+49+0.7-93/3X
3) 15x^2 - 125x - 5x^3 / 5x =
3X-25X-X^2
4) 12x^5 + 18x^4 + 33x^3 - 21x^2 - 3x + 69 / x + 3 =
12X^4-18X^3+87X^2+240X+717+2080/X/3
5) x^3 - 3x^2 + x + 5 / x - 2 =
X^2-X+3+11/X-2
6) 9x + 4 / 2x - 5=
4+1/2
7) 3x^3 - 5x^2 -4X - 8 / 2x^2 + x
1.5X-3.25

PRIMERA TAREA DE 2° EVALUACION

ultima tarea

1) (-2)(3)(-4)(5)(-6)(7)=
(3)(5)(7)=105
(-2)(-4)(-6)=-48
(105)(-48)=-5040

2) 5+8-9+12-45+65-87+23+54=
5+8+12+65+23+54=167
-9-45-87=141
167-141=26

3) (2/4)(3/5)(6/8)(-7/9)=
(2/4)(3/5)=(6/20)(6/8)=(36/160)(-7/9)=-252/1440=-0.175

4) (2/7)+(3/9)+5-6-8+45=
2/7+3/9=39/63
45+5=50
-6-8=-14
50-14=36
39/63+36/1=2307/63
2307/63=36.61

Escribir el número decimal de:
a) (37/65)
0.56
b) (13/9)
1.44
c) (11/24)
0.45
d) (25/7)
3.57

Encontrar el valor de X
a) 4X + 32 - (5/4) = 16 + (3/5) -12x
4X+12X+32-(5/4)=16+(3/5)
4X+12X=16-32+(3/5)+(5/4)
16X=-16+(13/20)
16X=-16+0.65
16X=-16.65
X=-16.65/16
X=1.040625

b) 28 - 77 + 44X = (4/6) - (18/4) -25X
28-77+44X+25X=(4/6)-(18/4)
-49+69X=(92/24)
69X=3.83+49
69X=52.83
X=52.83/69
X=0.765

c) 38X + 456 - (28/3) =
38X=-456+9.3
X=446.7/38
X=11.75

Sumas y Restas
(2x + 23 -18) + (-12 + 43X) =
2X+23-18-12+43X=0
2X+43X+23-18+12=0
45X+17

((-3/8) - (11/5) + 23x) - ((18/4)x + (45/5) -12) =
(-3/8)-(11/5)+23X-(18/4)X+45/5-12=
(-73/40)+(45/5)+23X-4.5X-12
1435/200+18.5X-12
7.175-12+18.5X
-4.825+18.5X

Multiplicaciones
(x + 2) (x -3) =
X2-3X+2X-6
X2-X-6

(2X - 16) (3X - 2Y+15) =
6X2-4XY+30X-48X+32Y-240
6X2-4XY-18X+32Y-240

(-x) (45xyz) =
-45X2YZ

(5X + 25 ) (12X +4) =
60X2+20X+300X+100
60X2+320X+100

(6x + 3)(6x +3) =
(6X+3)2
36X2+18X+9

4 tarea

1.-210/14) / (91392/266) +35x= 753951 + 456852 – 852963
55860/1279488 +35x= 357840
-1223628 + 35x= 357890
-357890 -1223628= -35x
-865788=-35x
-865788/-35=x
247368=x

2.- 5/3 + 14/7 = 4x
77/21 = 4x
3.6=4x
3.4 / 4=x
0.9= x

3.- 127/4 + 456/4 - 123/4 = 16x + 64/4
508+1824/16= 2332 / 16 - 123/4 =9328-1968/64 =7360/64
7360/64 = 16x + 16
115=32x
115/32= x
3.5= x

4.- (2)(-3)(5) + 25X = (147/15)X - 248/43 - 223/10530+25x=29.4x -5.7 -2.1
5.7 + 2.1 + 30 = 29.4x -25x
37.8= 4.4x
37.8/4.4=x
8.5=x

5.- (45/7)/(198/26) + 28X = 13 + (14/67)(222/111)1170/1386 28x = 13 + 3108/7437
0.8 + 28x = 13 + 0.4
-13 -0.4 +0.8 =-28x
-12.6=-28x
-12.6/-28=x
0.45=x

6.- 48/5 + (2/3)X = 1657 + 345
144+10/15= 154/1010.2x= 2002
x=2002/-10.2
x= -196.2

7.- (2)(-5)(-7)(-8)(9) + 257896 -1247 -5X = 951753 + 456
-5040 + 257896 -1247 -5x= 952209
251609 - 5x= 952209
-5x=952209 - 251609
-5x= 700600
x= 700600/5
x= 140120

8.- 23/3 + (16/7)x = 23x -12
161+48/21= 209/21
9.9x=23x-12
9.9x -23x= 12
-13.1x =12
x=12/13.1
x=0.9

9.- 12x - 18 + (23/7) = 145/24 - 4x
12x - 18 +3.2 = 6.0 - 4x
- 18 +3.2 =6.0 -4x -12x
8.8= -16x
8.8/16=x
0.55=x

10.- (6/7)(3/4) + 3x = 4 -(17/5)

0.6+3x=4-3.4

3x=3.4 + 4 - 0.6

3x=0

x= 0