expand the following (2b -1/3a )^3
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Step-by-step explanation:
Simple put,
(a - b)³ = a³ - b³ - 3ab(a - b)
Given, (2b - 1/a)³
= 8b³ - 1/a³ - 3.2b.1/a(2b - 1/a)
= 8b³ - 1/a³ - 12b²/a + 6b/a²
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Answer:
Refer to the attachment. It's solved hain the formula.
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