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