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МарийкаМей
@МарийкаМей
August 2022
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1/81 а^2-0,09с^4
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rubilovalex
1/81a^2-0,09c^4=(1/9a)^2-(0,3c^2)^2=(1/9a-0,3c^2)(1/9a+0,3c^2). используем формулу разности квадратов.
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