Question Number 88198 by topman2020 last updated on 08/Apr/20
$$\mathrm{Factorize}\:\:−{r}^{\mathrm{2}} +{p}^{\mathrm{2}} +{q}^{\mathrm{2}} −\mathrm{2}{pq}\:. \\ $$
Answered by TANMAY PANACEA. last updated on 08/Apr/20
$$\left({p}−{q}\right)^{\mathrm{2}} −{r}^{\mathrm{2}} \\ $$$$\left({p}−{q}+{r}\right)\left({p}−{q}−{r}\right) \\ $$