Simplificación general
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2
-81 - x + 2*x*(9 + x)
----------------------
2
(9 + x)
$$\frac{- x^{2} + 2 x \left(x + 9\right) - 81}{\left(x + 9\right)^{2}}$$
(-81 - x^2 + 2*x*(9 + x))/(9 + x)^2
Descomposición de una fracción
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$$1 - \frac{162}{\left(x + 9\right)^{2}}$$
162
1 - --------
2
(9 + x)
2.0*x/(9.0 + x) + 0.0123456790123457*(-81.0 - x^2)/(1 + 0.111111111111111*x)^2
2.0*x/(9.0 + x) + 0.0123456790123457*(-81.0 - x^2)/(1 + 0.111111111111111*x)^2
2
-81 + x + 18*x
---------------
2
(9 + x)
$$\frac{x^{2} + 18 x - 81}{\left(x + 9\right)^{2}}$$
(-81 + x^2 + 18*x)/(9 + x)^2
162
1 - --------------
2
81 + x + 18*x
$$1 - \frac{162}{x^{2} + 18 x + 81}$$
1 - 162/(81 + x^2 + 18*x)
Denominador racional
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/ 2\ 2
\-81 - x /*(9 + x) + 2*x*(9 + x)
---------------------------------
3
(9 + x)
$$\frac{2 x \left(x + 9\right)^{2} + \left(x + 9\right) \left(- x^{2} - 81\right)}{\left(x + 9\right)^{3}}$$
((-81 - x^2)*(9 + x) + 2*x*(9 + x)^2)/(9 + x)^3
Unión de expresiones racionales
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2
-81 - x + 2*x*(9 + x)
----------------------
2
(9 + x)
$$\frac{- x^{2} + 2 x \left(x + 9\right) - 81}{\left(x + 9\right)^{2}}$$
(-81 - x^2 + 2*x*(9 + x))/(9 + x)^2