|x|
The expression |x| represents the absolute value of x
The expression |x| represents the absolute value of x. The absolute value of a number is the distance of that number from zero on the number line. It tells us how far a number is from zero, regardless of its positive or negative sign.
If x is a positive number, then |x| is equal to x. For example, if x = 5, then |5| = 5.
If x is a negative number, then |x| is equal to the positive value of x. For example, if x = -3, then |-3| = 3.
In summary, |x| can be thought of as the non-negative value of x.
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