х*(а+3) х
------------- = ------------
у*(а+3) у
---------------------------------------------------------------------------------------------
3*(х+5)² 3
------------- = --------------
(х+5)³ (х+5)
-------------------------------------------------------------------------------
3а+3b 3*(a+b) 3
----------------- = ------------------ = ------------
5*(a+b) 5*(a+b) 5
--------------------------------------------------------------------------------
2*(x-y) 2*(x-y) 2
---------------- = -------------- = - --------
x*(y-x) -x*(x-y) x
----------------------------------------------------------------------------------------------------
x²-4x+4 (x-2)² x-2
----------------- = --------------- = -----------
3x-6 3*(x-2) 3