/ 2 2 2 2\
-\- a + 2*c + a*c + c*a /
-----------------------------
c*(a + c)
$$- \frac{a^{2} c + a c^{2} - a^{2} + 2 c^{2}}{c \left(a + c\right)}$$
-(-a^2 + 2*c^2 + a*c^2 + c*a^2)/(c*(a + c))
Рациональный знаменатель
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a c
-1 - a + - - -----
c a + c
$$- a + \frac{a}{c} - \frac{c}{a + c} - 1$$
2
- c + (a + c)*(a - c) - a*c*(a + c)
------------------------------------
c*(a + c)
$$\frac{- a c \left(a + c\right) - c^{2} + \left(a - c\right) \left(a + c\right)}{c \left(a + c\right)}$$
(-c^2 + (a + c)*(a - c) - a*c*(a + c))/(c*(a + c))
Объединение рациональных выражений
[src]
2
- c + (a + c)*(a - c) - a*c*(a + c)
------------------------------------
c*(a + c)
$$\frac{- a c \left(a + c\right) - c^{2} + \left(a - c\right) \left(a + c\right)}{c \left(a + c\right)}$$
(-c^2 + (a + c)*(a - c) - a*c*(a + c))/(c*(a + c))