-98
--------------
2
49 + b + 14*b
$$- \frac{98}{b^{2} + 14 b + 49}$$
$$- \frac{98}{\left(b + 7\right)^{2}}$$
(-7.0 + b)/(7.0 + b) - (49.0 + b^2)/(49.0 + b^2 + 14.0*b)
(-7.0 + b)/(7.0 + b) - (49.0 + b^2)/(49.0 + b^2 + 14.0*b)
-98
--------------
2
49 + b + 14*b
$$- \frac{98}{b^{2} + 14 b + 49}$$
2
-7 + b 49 + b
------ - --------------
7 + b 2
49 + b + 14*b
$$\frac{b - 7}{b + 7} - \frac{b^{2} + 49}{b^{2} + 14 b + 49}$$
2
-7 + b -49 - b
------ + --------------
b + 7 2
b + 14*b + 49
$$\frac{b - 7}{b + 7} + \frac{- b^{2} - 49}{b^{2} + 14 b + 49}$$
2
-7 + b -49 - b
------ + --------------
7 + b 2
49 + b + 14*b
$$\frac{b - 7}{b + 7} + \frac{- b^{2} - 49}{b^{2} + 14 b + 49}$$
(-7 + b)/(7 + b) + (-49 - b^2)/(49 + b^2 + 14*b)
Объединение рациональных выражений
[src]
/ 2 \ / 2\
(-7 + b)*\49 + b + 14*b/ - (7 + b)*\49 + b /
---------------------------------------------
/ 2 \
(7 + b)*\49 + b + 14*b/
$$\frac{\left(b - 7\right) \left(b^{2} + 14 b + 49\right) - \left(b + 7\right) \left(b^{2} + 49\right)}{\left(b + 7\right) \left(b^{2} + 14 b + 49\right)}$$
((-7 + b)*(49 + b^2 + 14*b) - (7 + b)*(49 + b^2))/((7 + b)*(49 + b^2 + 14*b))
2
-7 + b 49 + b
------ - --------------
7 + b 2
49 + b + 14*b
$$\frac{b - 7}{b + 7} - \frac{b^{2} + 49}{b^{2} + 14 b + 49}$$
(-7 + b)/(7 + b) - (49 + b^2)/(49 + b^2 + 14*b)
$$- \frac{98}{\left(b + 7\right)^{2}}$$
Рациональный знаменатель
[src]
2
49 7 b b
- -------------- - ----- + ----- - --------------
2 7 + b 7 + b 2
49 + b + 14*b 49 + b + 14*b
$$- \frac{b^{2}}{b^{2} + 14 b + 49} + \frac{b}{b + 7} - \frac{49}{b^{2} + 14 b + 49} - \frac{7}{b + 7}$$
/ 2\ / 2 \
\-49 - b /*(7 + b) + (-7 + b)*\49 + b + 14*b/
----------------------------------------------
/ 2 \
(7 + b)*\49 + b + 14*b/
$$\frac{\left(b - 7\right) \left(b^{2} + 14 b + 49\right) + \left(b + 7\right) \left(- b^{2} - 49\right)}{\left(b + 7\right) \left(b^{2} + 14 b + 49\right)}$$
((-49 - b^2)*(7 + b) + (-7 + b)*(49 + b^2 + 14*b))/((7 + b)*(49 + b^2 + 14*b))