Question

what should be subtracted from 7x/x^2+x-12to get 4/x+4​

Answer 1

Answer:

7x/x -3x/x +x -12+16 - x

Answer 2

Answer: let 7x/x^2+x-12 -q(x) =4/x+4

Then, q(x) =(7x/x^2+x-12) -(4/x+4)

=(7x-4) (x-3) /x^2+x-12 - ( 4/x+4)

=7x-4(x-3) /x^2+x-12=12/x^2+x-12