- #1

NODARman

- 54

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- TL;DR Summary
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When I solve the equation sometimes the answer in the answer keys is different but the same. Why do they do that?

For example:

After solving the equation I got 1/√2 which is the same as √2/2 because we multiplied it by √2/√2. Is there any good explanation why the book writer mathematicians like to do that thing?

For example:

After solving the equation I got 1/√2 which is the same as √2/2 because we multiplied it by √2/√2. Is there any good explanation why the book writer mathematicians like to do that thing?