Casio ClassPad dSolve problems

[frieddimsims]

Hey all
I came across a question in a Spesh practice exam.

y' = 12 - 5y/(x+50)

When using the dSolve function on my ClassPad II (Ver. 02.00.0000.0000) I get the answer:
y = (4x^3 + 600x^2 + 30000x + c + 500000)/(x+50)^2

But when I used my friends ClassPad II (Ver. 01.00.0000.0000) I get the nicer looking, and answer listed in the solutions:
y = 4(50 + x) + c / (50+x)^2

If you sub in a value for x and c you will find that they are the same answer.

Any ideas on either how to convert my ugly polynomial thingy into the nicer looking one, or how to revert my ClassPad to Version 01.00.0000.000?

Thanks