Tylko te dwa przykłady, proszę :)!
5^13 + 5^12 = 5^12 * (5^1 + 1) = 5^12 * 6 = 6 * 5^12
7^21 - 7^19 = 7^19 * (7^2 - 1) = 7^19 * (49 - 1) = 48 * 7^19
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5^13 + 5^12 = 5^12 * (5^1 + 1) = 5^12 * 6 = 6 * 5^12
7^21 - 7^19 = 7^19 * (7^2 - 1) = 7^19 * (49 - 1) = 48 * 7^19