Question

if a+1/a=2, then a²+1/a² = ?
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Answer 1

Answer:

       a² + 1/a² = 2

= (a + 1/a)² = a² + 1/a² + 2(a)(1/a)

= (2)² = a² + 1/a² + 2

= a² + 1/a² = 2

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Step-by-step explanation:

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Answer 2

Answer:

4

Step-by-step explanation:

a+1/a = 2

Sq. both sides,

(a+1/a)² = (2)²

a²+1/a² = 4

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