Respuestas
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1
x² - 3x x(x - 3) x - 3
---------- = ---------- = --------
x² + 3x x(x + 3) x + 3
---------------------------------------------------------------------------------------------------
1 2x 1
-------- + --------- - --------
x + 1 x² - 1 x - 1
(x + 1)(x - 1) + 2x(x + 1) 1
--------------------------------- - -------
(x + 1)(x - 1)(x + 1) x - 1
3x - 1 1
------------------ - -------
(x + 1)(x - 1) x - 1
(3x - 1)(x - 1) - (x + 1)(x - 1)
--------------------------------------
(x + 1)(x - 1)(x - 1)
3x - 1 - x - 1 2x - 2 2(x - 1) 2
------------------ = ------------------ = ------------------ = --------
(x + 1)(x - 1) (x + 1)(x - 1) (x + 1)(x - 1) x + 1
---------- = ---------- = --------
x² + 3x x(x + 3) x + 3
---------------------------------------------------------------------------------------------------
1 2x 1
-------- + --------- - --------
x + 1 x² - 1 x - 1
(x + 1)(x - 1) + 2x(x + 1) 1
--------------------------------- - -------
(x + 1)(x - 1)(x + 1) x - 1
3x - 1 1
------------------ - -------
(x + 1)(x - 1) x - 1
(3x - 1)(x - 1) - (x + 1)(x - 1)
--------------------------------------
(x + 1)(x - 1)(x - 1)
3x - 1 - x - 1 2x - 2 2(x - 1) 2
------------------ = ------------------ = ------------------ = --------
(x + 1)(x - 1) (x + 1)(x - 1) (x + 1)(x - 1) x + 1
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