ok so i got this question and i know how to slove it and everything but im lost as of where the teacher got this one number.. so here it is

(x+5)/(x-2) = 5/(x+2) + 28/(x^2-4)

so from that i got ..

x^2+10 = 5x-10+28

but.. the teacher got

x^2 + 7x +10 = 5x-10+28

where did he get 7x from???