Helping students gain understanding and self-confidence in algebra.
ReviewStudent wrote:(x^-1 – y^-1) / (x-y)^-1
Now, I understand the next step:
(1/x - 1/y) / (1/x-y)
But how do they get to this:
ReviewStudent wrote:... = (y-x/xy)(x-y/1)
But then wouldn't you continue, and go:
= 2xy - y^2 - x^2 / xy