Question

. If a²+ 1/ a² = 27, then find (i) a − 1 /a , (ii) a³ − 1/ a³​

Answer 1

a² = 27

1/a² = 1/(27)²

1/a² = 1/27 = 0.3

so ,

a - 1/a = 27 - 0.3 = 26.7

Answer 2

Step-by-step explanation:

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