In an early iteration of this question on the Mathematics SE, the radicals weren't properly formatted, so they only had the √ symbol with no indication of which terms were supposed to be included under the radical sign. Then the question was, given the expression:
6fg √2g - 5f √18g^3 + 6fg √6g
which of the following is equivalent to it:
- 6fg√6g - 9fg√2g
- 6fg√6g - 9fg
This reminds me of those puzzles where some of the digits in an arithmetic puzzle are missing, and you have to figure them out. So how would you solve this automatically with Mathematica? A neat bonus would be to parse the expressions automatically as well.