Simplify the given rational expression.

(1)

11 18

1- ---- + ------

x x^2

--------------------

2 63

1- ---- - --------

x x^2

(2)

5

x+----

8

----------

7

x - ---

2

(3)

8

10+---

x

----------

20

25+----

x

(1)

11 18

1- ---- + ------

x x^2

--------------------

2 63

1- ---- - --------

x x^2

(2)

5

x+----

8

----------

7

x - ---

2

(3)

8

10+---

x

----------

20

25+----

x