Variable use between CAS and Home.

[Hans S.]

(08-11-2017 01:08 PM)wangchong01 Wrote:  replace("2*X+5*X^2-5","X","x") then copy the content without ' " '.

Just another dumb question: How could I get rid of the quotation marks?
The mark on the right hand cannot be deleted, deleting the mark on the left deletes the whole string.
And a possible even dumber question: where in the documentation(s) may I find described this (getting rid of the marks, not the use of the "replace" command)?

Thanks

Hans