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(1/a)^n = 1^n / a^n
a^⁻n = 1/a^n
(1/3)⁻⁴ =
1⁻⁴ / 3⁻⁴ =
3⁴ / 1⁴ =
3⁴/1 =
3⁴
(2/3)⁻⁹ =
2⁻⁹ /3⁻⁹ =
3⁹/2⁹
( - 7 /9)³ * (9/7)⁻¹¹
------------------------- =
(-7 / 9)⁻⁴
(- 7 / 9)³ * ( -7/9)⁴
---------------------- =
(9/7)¹¹
(- 7/9)³⁺⁴
------------ =
(9 /7)¹¹
(- 7/9)⁷
---------
(9/7)¹¹
(- 7)⁷
------
9⁷
---------- = Aplicando ley de oreja
9¹¹
------
7¹¹
(- 7)⁷ * 7¹¹
-------------- = Aplicamos a³ = a * a² y a^m * a^n = a^(m +n)
9⁷ * 9¹¹
(- 7)(- 7)⁶ * 7¹¹ Toda base negativa elevada a un exponente par
------------------- = da positiva por lo tanto ( - 7)⁶ = 7⁶
9⁷⁺¹¹
(- 7) * 7⁶ * 7¹¹
----------------- =
9¹⁸
(- 7) * 7 ⁶⁺¹¹
---------------- =
9¹⁸
(- 7) * 7¹⁷
------------
9¹⁸