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

You are not logged in.

- Topics: Active | Unanswered

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 104,370

I repeated it because of this:

But when 9 is in a square root sign it gives two answers i.e -3 and 3.

I wanted him to be sure that the answer is only 3. 1 answer not 2.

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **A number by itself is useful, but it is far more useful to know how accurate or certain that number is.**

Offline

**EbenezerSon****Member**- Registered: 2013-07-04
- Posts: 510

Hi, bobym.

Look the link you provided at page 4 concerning the square roots signs.

It says so:

When two numbers are multiplied within a square root, you can split it into a multiplication of two square roots.

But only when X and Y are both greater than or equal to 0.

My question is:

Which figure is equal to zero before the splitting will be possible?

*Last edited by EbenezerSon (2013-11-17 20:35:26)*

I know only one thing - that is that I know nothing

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 104,370

Hi;

I do not see the figure.

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **A number by itself is useful, but it is far more useful to know how accurate or certain that number is.**

Offline