Question

if (a+1/a)²=9,then a³+1/a³ equals​

Answer 1

Answer:

hey

Step-by-step explanation:

Given (a + 1/a)^2 = 9,

Then a + 1/a = 3  ----- (1)

We know that (a^3 + b^3) = (a + b)^3 - 3ab(a + b)

(a^3 + 1/a^3) = (a + 1/a)^3 - 3 * a * 1/a (a + 1/a)

                    = (3)^3 - 3(3)

                     = 27 - 9

                     = 18.

Therefore the value = 18.

Hope this helps

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Answer 2

Answer:

18

Step-by-step explanation:

Mark as brain list ok broom