Let's say that a square has an area of 4 units. Since the side lengths = sqrt(area), can they be negative? In theory, 2 x 2 = 4, and -2 x -2 = 4. So can I answer as +/- 2?
+118723 Later on in maths you will find that there is often more than one answer to a question. But each answer needs to be examined to see if it is valid.
This is an example of that.
yes side squared =area
therefore
side = +/-sqrt( area)
BUT the length of a square must be positive so the negative answer is invalid.
Does that help?
+118723 Later on in maths you will find that there is often more than one answer to a question. But each answer needs to be examined to see if it is valid.
This is an example of that.
yes side squared =area
therefore
side = +/-sqrt( area)
BUT the length of a square must be positive so the negative answer is invalid.
Does that help?
