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The thing that I learn this week are Infinite Geometric Series, Absolute Value of a Real Number
Absolute Value is the principal square roof of the square of the number.
Every real number can be represented as a point on a number line.
The sigh of the number indicates its position relative to 0 .
The magnitude of the number indicates its distance from 0 .
On the number line below, each of the numbers -2 and 2 is located 2 units from 0. So, each number has an absolute value of 2 . This is written as:|-2|=2 and |2|=2
|6|=√（6）^2 |-6|=√(-6)^2
the distance from 0 is 6. 6^2=36 √36=6 so |6|=√(6)^2 |-6|=√(-6)^2