Question Number 173008 by Mikenice last updated on 04/Jul/22
Answered by pnuvu last updated on 04/Jul/22
$$\frac{\mathrm{4}\left({x}^{\mathrm{2}} −{y}^{\mathrm{2}} \right)}{{x}−{y}}=\frac{\mathrm{4}\left({x}+{y}\right)\left({x}−{y}\right)}{{x}−{y}}=\mathrm{4}\left({x}+{y}\right) \\ $$
Answered by Skabetix last updated on 05/Jul/22
$$\frac{\mathrm{4}{x}^{\mathrm{2}} −\mathrm{4}{y}^{\mathrm{2}} }{{x}−{y}}=\frac{\mathrm{4}\left({x}−{y}\right)\left({x}+{y}\right)}{{x}−{y}}=\mathrm{4}\left({x}+{y}\right) \\ $$