Question

If a-1/a=3 then find the value of a²-1/a²
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Answer 1

Given -

$a - \frac{1}{a} = 3$

To find -

The value of ${a}^{2} - \frac{1}{ {a}^{2} }$

Solution -

Given equation,

$a - \frac{1}{a} = 3$

Square means multiply the given values with itself two times.

Taking square of both sides we get

${a}^{2} - \frac{1}{ {a}^{2} } = 9$

Hence,

The value of ${a}^{2} - \frac{1}{ {a}^{2} }$ is 9.

Answer 2

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.If a-1/a=3 then find the value of a²-1/a²