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Мария2904
@Мария2904
July 2022
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27с³-8а³
!!!!!!!!!!!!!!!!!!
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zinaidazina
Применим формулу разности кубов: a
³ - b³ = (a-b)(a²+ab+b²)
27с³-8а³ =
= (3c)
³ - (2a)³ =
= (3c-2a)((3c)²+3c·2a + (2a)²) =
= (3c-2a)(9c²+6ac+4a²)
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Answers & Comments
27с³-8а³ =
= (3c)³ - (2a)³ =
= (3c-2a)((3c)²+3c·2a + (2a)²) =
= (3c-2a)(9c²+6ac+4a²)