Remember that the first expression always has a plus (+) inside the root sign and the second always has a minus (-) inside its root-sign but the sign in-between depends on the second value.
Definition of root sign in US English:
root sign
nounˈro͞ot ˌsīn
Mathematics
another term for radical sign
Example sentencesExamples
Remember that the first expression always has a plus (+) inside the root sign and the second always has a minus (-) inside its root-sign but the sign in-between depends on the second value.