Question

expand (a+1/a) ^3.. .....​

Answer 1

Answer:

(a+1/a)^3= a^3+b^3+3ab(a+b)

Answer 2

Answer:

$= (a + \frac{1}{a} ) {}^{3} \\ \\ = a {}^{3} + \frac{1}{a {}^{3} } + 3a {}^{2} \times \frac{1}{a} + 3a \times \frac{1}{a {}^{2} } \\ \\ = a {}^{3} + \frac{1}{a {}^{3} } + 3a + \frac{3}{a}$

Step-by-step explanation:

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