What does this excerpt from a christmas carol by charles dickens reveal about the character of ebenezer scrooge?

You didnt give us the excerpt, but in the beginning of the story scrooge was a terrible person, but as the story progresses it seems that he has every reason to be well a scrooge. nearing the end of the story, however, after all the ghost tell him whats what, he dedicates the rest of his life being the most selfless person he could be.

4y - 6 + y^2 - 9 = y^2 + 4y - 15y^2 term terms- termstotal of 3 terms when simplified