SOLUTION: I need to say what is wrong with this statement: {{{ sqrt(x^2+y^2) = x+y }}} Would it be that it should be = {{{ x^2+y^2 }}} ? Thanks for the help!

Question 335286: I need to say what is wrong with this statement:

Would it be that it should be = ?
Thanks for the help!
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Square both sides.

So the above equality only holds if either x or y or both are zero.
Otherwise you're missing the 2xy term.