---

Status: Waiting for your answers.

Problem: Solve for the variable. Check a value if it is extraneous.   √ n + 42  = n + 12   n + 42 = ( n + )2   n + 42 = n2 + n +   0 = n2 + n +   0 = ( n + )( n + )   n1 =     n2 = extraneous   extraneous