(a + b - c)*(a + c - b)*(b + c - a)
$$\left(- a + b + c\right) \left(a - b + c\right) \left(a + b - c\right)$$
(a + b - c)*(a + c - b)*(b + c - a)
Рациональный знаменатель
[src](a + b - c)*(a + c - b)*(b + c - a)
$$\left(- a + b + c\right) \left(a - b + c\right) \left(a + b - c\right)$$
Объединение рациональных выражений
[src](a + b - c)*(a + c - b)*(b + c - a)
$$\left(- a + b + c\right) \left(a - b + c\right) \left(a + b - c\right)$$
(a + b - c)*(a + c - b)*(b + c - a)
$$\left(- a + b + c\right) \left(a - b + c\right) \left(a + b - c\right)$$
(a + b - c)*(a + c - b)*(b + c - a)
$$\left(- a + b + c\right) \left(a - b + c\right) \left(a + b - c\right)$$
3 3 3 2 2 2 2 2 2
- a - b - c + a*b + a*c + b*a + b*c + c*a + c*b - 2*a*b*c
$$- a^{3} + a^{2} b + a^{2} c + a b^{2} - 2 a b c + a c^{2} - b^{3} + b^{2} c + b c^{2} - c^{3}$$
-(a + b - c)*(a + c - b)*(a - b - c)
$$- \left(a - b - c\right) \left(a - b + c\right) \left(a + b - c\right)$$