1 over What?
Algebra
Level
3
Simplify:
\[ \frac{1}{(b-c)(a^2+ac-b^2-bc)} +\frac{1}{(c-a)(b^2+ab-c^2-ac)}+\frac{1}{(a-b)(c^2+bc-a^2-ab)} \]
by
Adam Phúc Nguyễn