Question

(a + 1/a)² - (a-1/a)²​

Answer 1

$\frac{ {(a + 1)}^{2} }{ {a}^{2} } - \frac{ {(a - 1)}^{2} }{ {a}^{2} }$

$\frac{ {a ^{2}+ 2a}^{} + 1 - ( {a}^{2} - 2a + 1) }{ {a}^{2} }$

$\frac{ {a {}^{2} + 2a}^{} + 1 - {a}^{2} + 2a - 1) }{ {a}^{2} }$

4a/a^2

4/a is the answer.

Answer 2

Answer:

Step-by-step explanation:

→ Answer in attachment.

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