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symbolic simplification usage
Hi

I have this worksheet.
I want to simplify the last equation that they will use r, for example, the last equation needs to see like this:

how can I do that?
Hi

I have this worksheet.
I want to simplify the last equation that they will use r, for example, the last equation needs to see like this:

how can I do that?
r2 is not r^2 but using superscript font 2.
So, we can define,

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