Question

If [a + (1/a)²– 2[a – (1/a)] = 12, then which of the following is a value of ‘a’?​

Answer 1

Step-by-step explanation:

a + 1/a² -2a + 2/a = 12

a³ +1 -2a³ + 2a = 12a²

a³ +12a² -2a -1= 0

Answer 2

see in attachment.

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