Can someone please explain to me how or where do I get this answer from doing this derivative equation...

y=(x^2-2x+2)e^(5x/2)

this is where I am stuck:

y=(x^2-2x+2)e^(5x/2)

= (x^2-2x+2)(e^(5x/2))(5/2)+(2x-2)(e^5x/2)

the answer in the book is: (5/2x^2-3x+3)e^(5x/2)

where do you get the 3x and 3 from?