Question 254497
You didn't say what you want to with this mess.
Is there an equal sign somewhere?
Is it 
(9x^2)/(144 - 4/25) yields (225 x^2)/3596
or 
(9x^2/144)-(4/25) yields x^2/16-4/25 or  1/400(5x-8)(5x+8)