proszę po kolei, pilnie potzrebuję :))
7^12(3 + 4) 7^12 * 7 7^(12 + 1)
.. = ----------------- = --------------- = -------------- = 7^13 : 7^(-12) = 7^(13 -(-12)) =
7^12 : 7^24 7^(12 - 24) 7^(-12)
= 7^(13 + 12) = 7^25
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7^12(3 + 4) 7^12 * 7 7^(12 + 1)
.. = ----------------- = --------------- = -------------- = 7^13 : 7^(-12) = 7^(13 -(-12)) =
7^12 : 7^24 7^(12 - 24) 7^(-12)
= 7^(13 + 12) = 7^25