/ 1\ / 18\
|-3 + -|*|-6 + a + --|
\ a/ \ a /
----------------------
2 9
9 + a + 6*a + --
2
a
$$\frac{\left(-3 + \frac{1}{a}\right) \left(a - 6 + \frac{18}{a}\right)}{a^{2} + 6 a + 9 + \frac{9}{a^{2}}}$$
(-3.0 + 1/a)*(-6.0 + a + 18.0/a)/(9.0 + a^2 + 6.0*a + 9.0/a^2)
Рациональный знаменатель
[src] 3 2
18 - 60*a - 3*a + 19*a
------------------------
4 3 2
9 + a + 6*a + 9*a
$$\frac{- 3 a^{3} + 19 a^{2} - 60 a + 18}{a^{4} + 6 a^{3} + 9 a^{2} + 9}$$
Объединение рациональных выражений
[src](1 - 3*a)*(18 - 3*a + a*(-3 + a))
---------------------------------
4 3 2
9 + a + 6*a + 9*a
$$\frac{\left(- 3 a + 1\right) \left(a \left(a - 3\right) - 3 a + 18\right)}{a^{4} + 6 a^{3} + 9 a^{2} + 9}$$
-(-1 + 3*a)*(18 + a*(-6 + a))
------------------------------
2 / 2 \
9 + a *\9 + a + 6*a/
$$- \frac{\left(3 a - 1\right) \left(a \left(a - 6\right) + 18\right)}{a^{2} \left(a^{2} + 6 a + 9\right) + 9}$$
/ 1\ / 18\
|-3 + -|*|-6 + a + --|
\ a/ \ a /
----------------------
2 9
9 + a + 6*a + --
2
a
$$\frac{\left(-3 + \frac{1}{a}\right) \left(a - 6 + \frac{18}{a}\right)}{a^{2} + 6 a + 9 + \frac{9}{a^{2}}}$$
/ 2 3 \
-\-18 - 19*a + 3*a + 60*a/
-----------------------------
4 3 2
9 + a + 6*a + 9*a
$$- \frac{3 a^{3} - 19 a^{2} + 60 a - 18}{a^{4} + 6 a^{3} + 9 a^{2} + 9}$$
/ 2 \
-(-1 + 3*a)*\18 + a - 6*a/
----------------------------
4 3 2
9 + a + 6*a + 9*a
$$- \frac{\left(3 a - 1\right) \left(a^{2} - 6 a + 18\right)}{a^{4} + 6 a^{3} + 9 a^{2} + 9}$$