Question

Can someone explain to me what exactly a linear number means? Thanks

Answer 1

such numbers as have relation to length only: such is a number which represents one side of a plane figure. If the plane figure is square, the linear figure is called a root.
The root of a number x is another number, which when multiplied by itself a given number of times, equals x. For example the second root of 9 is 3, because 3x3 = 9.
•The second root is usually called the square root.
•The third root is susually called the cube root