I just want to check my answers with someone because im not sure i am correct...

1. 12u cubed/7v to the fifth * 14v squared/3u =

8 u squared/ v cubed

2. 9x * 4/x =

36?

3. x squared -3x +2/x squared -4x +4 divided by x squared -2x +1/ 3x squared -12 =

3(x+2)/ (x-1)

4. 15 divided by 5x/x+1 =

3(x+1) / x

5. 6x/x-2 divided by 3x =

2/x-2