(1+_) **2 = 16

Answer 1

Is the _ a blank to be filled or what? The answer is 3 or -5.

Answer 2

Please read this before using Q&A Discussions:
https://www.sololearn.com/Discuss/1316935/?ref=app

Answer 3

// Please put appropriate title or description about your doubt, so community can help you

Answer 4

If you using python and in a python console, that underscore takes on the last console output.