Question

Wykonaj działania:

y + 2y

---- -------

3-y y-3

8 - 2x+8

-- --------

x+1 (x+1)^2

1 - 1-x

----- ------

4x^2 2x-1

3- x + 3

----- ------

x-2 x+2

Answer 1

a)

y         +    2y                   y^2  - 3y - 2y^2   +6y

-----         -------      =     ----------------------------

-y+3        y-3                    -y^2 + 6y -  9

 

b)

8        -     2x+8                  8x+8-2x-8                      6x

-----       ----------      =     -----------------------    =    ---------------

x+1         (x+1)^2                 (x+1)^2                          (x+1)^2

c)

1         -   1-x             2x - 1 - (1-x) * 4x^2               2x - 1 - (4x^2 - 4x^3)              2x - 1 - 4x^2 + 4x^3

-----       ------     =    ----------------------------    =  -------------- -----------------   =    ---------------------------

4x^2       2x-1            (2x-1) * 4x^2                         8x^3 - 4x^2                               8x^3 - 4x^2

d)

3-   x        +    3              (3-x) * (x+2)  +  3x - 6            3x + 6 -x^2 - 2x +3x - 6            4x-x^2             

-----------     ------     =   -----------------------------     = --------------------------------  =   ----------------  

      x-2           x+2           (x-2) * (x+2)                          x^2  -4                                          x^2  - 4

 

 

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