2 5 21 3*x
- - + ------ + ------- - --------
x -7 + x 2 2
49 - x -49 + x
$$- \frac{3 x}{x^{2} - 49} + \frac{21}{- x^{2} + 49} + \frac{5}{x - 7} - \frac{2}{x}$$
5.0/(-7.0 + x) + 21.0/(49.0 - x^2) - 2.0/x - 3.0*x/(-49.0 + x^2)
Рациональный знаменатель
[src]/ 2\ // 2\ 2 \ / 2\
\49 - x /*\\-49 + x /*(14 + 3*x) - 3*x *(-7 + x)/ + 21*x*\-49 + x /*(-7 + x)
----------------------------------------------------------------------------
/ 2\ / 2\
x*\-49 + x /*(-7 + x)*\49 - x /
$$\frac{1}{x \left(x - 7\right) \left(- x^{2} + 49\right) \left(x^{2} - 49\right)} \left(21 x \left(x - 7\right) \left(x^{2} - 49\right) + \left(- x^{2} + 49\right) \left(- 3 x^{2} \left(x - 7\right) + \left(3 x + 14\right) \left(x^{2} - 49\right)\right)\right)$$
Объединение рациональных выражений
[src]/ 2\ // 2\ 2 \ / 2\
\49 - x /*\\-49 + x /*(14 + 3*x) - 3*x *(-7 + x)/ + 21*x*\-49 + x /*(-7 + x)
----------------------------------------------------------------------------
/ 2\ / 2\
x*\-49 + x /*(-7 + x)*\49 - x /
$$\frac{1}{x \left(x - 7\right) \left(- x^{2} + 49\right) \left(x^{2} - 49\right)} \left(21 x \left(x - 7\right) \left(x^{2} - 49\right) + \left(- x^{2} + 49\right) \left(- 3 x^{2} \left(x - 7\right) + \left(3 x + 14\right) \left(x^{2} - 49\right)\right)\right)$$
$$\frac{14}{x \left(x - 7\right)}$$
5 21 2 3*x
----- + ------- - - - -------
x - 7 2 x 2
49 - x x - 49
$$- \frac{3 x}{x^{2} - 49} + \frac{21}{- x^{2} + 49} + \frac{5}{x - 7} - \frac{2}{x}$$
$$\frac{14}{x \left(x - 7\right)}$$
$$\frac{14}{x^{2} - 7 x}$$