diviciones y multiplicasiones 1-5

EJERCICIO I
1. 5(x-2y)=5x-10y

2. (x^2+2x) 3x^y= 3x^6y+6x^5y

3.(x-3)(x+5)=x-5x-3x-15=x-2x-15

4.(x+7)(x-4)= x+4x+7x-28=x+3x-28

5.(x+4)(x-3)=x-3x+4x-12=x+1x-12

6.(3x-4)(6x-2)=18x^2-6x-24x+6=18x^2-30x+6

7.-4x(2x-3)=-8x^4+12x

8.(3x^2-4x)(-5y^3)=-15x^2y^3+20xy^3

9.(2x+3)(6x^3+4x^2+2x+7)=12x^4+8x^3-4x^2+14x+18x^3+12x^2-6x+21=12x^4+26x^3+16x^2+8x+21

10.(4x^2+6x-3)(8x^5+16x^4+63x^3+27x^2-189x-65)=32x^7+64x^6+252x^5+108x^4+756x^3+260x^2+48x^6+96x^5+378x^4+162x^3-1134x^2-390x-24x^5-48x^4-189x^3-81x^2+567x+195=32x^7+112x^6+324x^5+438x^4+729x^3-955x^2+957x+195

EJERCICIO II.

1.9x/-18x^3= -2x^2

2.2x^2/3x^5=-1.5x^3

3.3x/3x^2-6xy-12x^2=x-2y-4x

4.-2X/-4X^4+6X^4+32X=2X^3-3X^3-16

5.3x^3/17x^4=5.666667x

6.12xy/628x^2zy=52.3333xz

7.8z/256z^6=32z^4

8.5yz/625x^3y^2z=125x^3y

cuarta tarea 1-5

1.-34.8x=30-5.76-2.12=22.12/34.8x=1.57
x=1.57

2.-26x=-.84+13+4.21=16.37/26x=1.58
x=1.58

3.-6x=9.6+1657+345=1992.4/.6x=3.01
x=3.01

4.-5x=5040-257896+1247+951753+456=700600/5x=7.13
x=7.13

5.--2x=1.6-1.3=.3/2x6.6
x=6.6

6.--3x=.28+4-3.4=.88/-3x=-3.40
x=3.40

7.--21.3x=-1.7+23=-7.6-12=-19.6/-21.3x=1.08
x=1.08

8.-16x=18+3.2+72.5=93.7/16x=.17
x=.17

9.-3.25x=.11-5.6=-5.49/3.25=-.59
x=-.59

10.-31.5x=22+178-6.6+147=340.4/31.5x=.09
x=.09

11.-495099+654852-123987=145x-22/16x25964/143.62=143.62=143.6x=1.39
x=1.39

segunda tarea salon 1-5

1.1._(3/5)/(16/9)=(27/80)(-2)=(-27/40)+12=507/40(-2)=-1014/40-36=-426/40

1.2._(3/5)/(16/9)=(27/80)(2)=(54/80)+12=1010/80(2)=2020/80-36=-860/80

2.1._-13(-3)=39-35=+2/7-15/8=-89/56+4=313/56

2.2._-13(3)=-39-35=-74+2/7-15/8=-74+-89/56=-4233/56

3.1._21(-4)-16(-4)=- -84-64=20-18=2+23=25-65=-40+79=39--180=219

3.2._21(5)-16(5)=105-80=25-18=7+23=30-65=-35+79=44-45(5)=44-225=-181

4.1._(9/8)(7/14)=(63/112)/(23/6)=(378/2576)(-6/1)=2268/2576+-6/5=26790/12880=2.0799-19=-16.92

4.2._9/8(7/14)=(63/112)/(23/6)=(378/2576)(3/1)=1134/2576+1/5(3/1)=-17.959

primer tarea 1-5

Respuestas:

1.(6)(-5)=(-30)(-2)=(60)(3)=(180)(-7)=(-1260)(8)=-10080
2.(-25)(3)=-75+2-73+4=-69-7=-76-12=-88+45=-43-33=-76+75=-1
3.-134-12=-146+13=-133+54=-79-65=144+67=77(2)=154(3)=462(4)=1848
4.12-44=-32+36=4-76=-72+89=17-55=-38+243=205-74=131
5.(6)(-4)=(-24)(5)=(120)(-6)=(720)(7)=(5040)(-8)=(-40320)(9)=(-362880)(0)=0
6.72/15+32/99=7128+480/1485=7608/1485=2536/495
7.28+45/6=73/6-6/4=292-36-24=256/24=128/12=32/3
10.(72/48 :25/4=288/1200)+(585/90)=25920+702000/10800=727920/108000-16/4=2911680-1728000/432000=1183680/432000
11.1485/204+3/5=7425+612/1020=8037/1020-18/7=56259-18360/7140=73899/7140+16/9=341091+114240/64260=455331/64260-25/5=227655-1606500/3213000=670155/3213000