Pomożcie . ;d
25⁸/(1/5)⁻⁷ ÷ 25⁹ =
= (5²)⁸/5⁷ ÷ (5²)⁹ =
= 5¹⁶/5⁷ ÷ 5¹⁸ =
= 5¹⁶⁻⁷ ÷ 5¹⁸ =
= 5⁹ ÷ 5¹⁸ =
= 5⁹⁻¹⁸ =
= 5⁻⁹ =
= (1/5)⁹ =
= 1/1953125
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25⁸/(1/5)⁻⁷ ÷ 25⁹ =
= (5²)⁸/5⁷ ÷ (5²)⁹ =
= 5¹⁶/5⁷ ÷ 5¹⁸ =
= 5¹⁶⁻⁷ ÷ 5¹⁸ =
= 5⁹ ÷ 5¹⁸ =
= 5⁹⁻¹⁸ =
= 5⁻⁹ =
= (1/5)⁹ =
= 1/1953125