2.2x+8/x？ - 16

3.x/2a？ b

-2xb

4.x- 1/ 1

+

1+x/ 1

5.a？ - 1/a

+

Answer? - 1/3a+ 1

+

1-a？ /2a+ 1

6.x？ -2xy+y？ /x？ -Really? , where x= 1 10 and y= 10. (Simplify first, then evaluate)

7. Known (x- 1)(x-2)/3x-4

=

X- 1 a

+

X-2 b, reality number a, B.

8.( 1-x)？ /2x；

1.-7ab/c

2.(x-4)/2

3.-a^2*b/2*x^2*b

4.2*x/(x^2- 1)

5.2*a/(a^2- 1)

6.(x+y)*(x-y)/(x-y)^2=(x+y)/(x-y)= 1.2

7.(3x-4)/(x- 1)(x-2)= 1/(x- 1)+2/(x-2)

therefore

A= 1

B=2

8.2/( 1-x)( 1/x- 1)