To undo squaring, we take the square root. ... The square root could be positive or negative because multiplying two negative numbers gives a positive number.

Is squaring reversible?

SquaringEdit

Because both a positive value and a negative value, when squared, is the same number, any theorem involving squares must have to contend with the possibility of either a positive or negative value. ... Thus, by default, squaring is an irreversible operation.

Can you cancel out square?

We can say that the square root and the square cancel each other out. They are the inverse of each other. If we have a number written with the index 2 ( squared) then taking the square root simply means that we leave out the 2 ( this only applies to positive numbers ).