3.0/(9.0 + x^2 + 6.0*x) + 17.0/(-9.0 + x^2) - 2.0/(-3.0 + x)
Рациональный знаменатель
[src] / 2 \ / 2\ / 2 \
(-3 + x)*\126 + 20*x + 102*x/ - 2*\-9 + x /*\9 + x + 6*x/
-----------------------------------------------------------
/ 2\ / 2 \
\-9 + x /*(-3 + x)*\9 + x + 6*x/
$$\frac{\left(x - 3\right) \left(20 x^{2} + 102 x + 126\right) - 2 \left(x^{2} - 9\right) \left(x^{2} + 6 x + 9\right)}{\left(x - 3\right) \left(x^{2} - 9\right) \left(x^{2} + 6 x + 9\right)}$$
Объединение рациональных выражений
[src] / 2 \ / 2\
(-3 + x)*\126 + 3*x + 17*x*(6 + x)/ - 2*\-9 + x /*(9 + x*(6 + x))
------------------------------------------------------------------
/ 2\
\-9 + x /*(-3 + x)*(9 + x*(6 + x))
$$\frac{\left(x - 3\right) \left(3 x^{2} + 17 x \left(x + 6\right) + 126\right) - 2 \left(x^{2} - 9\right) \left(x \left(x + 6\right) + 9\right)}{\left(x - 3\right) \left(x^{2} - 9\right) \left(x \left(x + 6\right) + 9\right)}$$
2
24 - 2*x + 8*x
---------------------
3 2
-27 + x - 9*x + 3*x
$$\frac{- 2 x^{2} + 8 x + 24}{x^{3} + 3 x^{2} - 9 x - 27}$$
-2*(-6 + x)*(2 + x)
-------------------
2
(-3 + x)*(3 + x)
$$- \frac{2 \left(x - 6\right) \left(x + 2\right)}{\left(x - 3\right) \left(x + 3\right)^{2}}$$