# Math Is Fun Forum

Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫  π  -¹ ² ³ °

You are not logged in.

## #1 2023-09-08 12:20:01

harpazo1965
Member
Registered: 2022-09-19
Posts: 129

### Principal Square Root...Part 2

College Algebra
Section R.2

A. Why is the principal square root of 0 is 0?
Why not the absolute value of 0?

B. If c is greater than or equal to 0, then (sqrt{ c })^2 = c.
Why is the answer c and not the absolute value of c?

Offline

## #2 2023-09-08 21:53:21

Bob
Registered: 2010-06-20
Posts: 9,719

### Re: Principal Square Root...Part 2

zero has no absolute value as it is not positive nor negative.

As he has already defined the principal root to be postive there is no need for the absolute to be stated again.

Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

Offline

## #3 2023-09-09 03:04:28

harpazo1965
Member
Registered: 2022-09-19
Posts: 129

### Re: Principal Square Root...Part 2

Understood. Thanks.

Offline