

Calculator Key: ■√x
| Real1 | → | Real2 | 
| Real1 | → | Complex2 | 
| Complex1 | → | Complex2 | 
| Symbol1 | → | Expression2 | 
| Expression1 | → | Expression2 | 
This operation takes a real or complex value and finds its square root. The positive root is return for real values. If the input real value is negative, the result will be complex.