# Absolute Value

```Pre-Calculus 11A
________________ value is the ________________ of a point or number from the _________
(zero point) of a number line or coordinate system.
The absolute value of c is written as __________
The |c| is defined algebraically as:
Examples:
Pre-Calculus 11A
The word &quot;_________&quot; means root. _________ roots, _________ roots, any root expressed with the
symbol
3
45
Radical __________ : - an expression involving the __________ __________.
The ___________ ____________ of radicals tells us that the ________ ________ of a ________ equals
the ________ of the ________ ________ of the ________.
a)
300
b)
288
a)
40
b)
108
Pre-Calculus 11A
Principal Square Root
For _______ _______ the concept of ___________ _______ must be considered.
√(−3)2 =
−√(−3)2 =
√(3)2 =
−√(3)2 =
√𝑥 2 =
−√𝑥 2 =
(- 4)2 or ( 4)2 both equal _____.
However √16 =
, not ________.
By definition, _______defines only the _____________ _______ root (
If we want the negative root, use (
If both roots are required write (
).
).
).