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November 20, 2014

November 20, 2014

Posted by **Jahnay** on Monday, January 9, 2012 at 5:51pm.

radical of 3 times radical of three= radical of 9?

radical of 2x times radical of 2x= radical of 4x^2?

radical of 14 times radical of 2= radical of 28?

- Algebra 1 -
**Damon**, Monday, January 9, 2012 at 6:05pmyes

- Algebra 1 -
**Reiny**, Monday, January 9, 2012 at 6:05pm1st: but what is √9 ?

2nd: √(2x) √(2x) = √(4x^2) = 2x

generally: √a√a = a

3rd: √14 √2

= √28

= √4√7

= 2√7

- Algebra 1 -
**Jahnay**, Monday, January 9, 2012 at 6:08pmoh ok so i have to simplify everything for it to be correct right?

- Algebra 1 -
**Jahnay**, Monday, January 9, 2012 at 6:09pmexcept i don't understand your second point. I'm lost right there.

- Algebra 1 -
**Reiny**, Monday, January 9, 2012 at 6:14pmyes, you were not finished

for my 2nd:

The square root of a number times itself gives you the number itself

e.g.

(√5)(√5) = √25 = 5

√23(√23) = √529 = 23

√a(√a) = a

- Algebra 1 -
**Henry**, Monday, January 9, 2012 at 6:20pmpost it.

- Algebra 1 -
**Jahnay**, Monday, January 9, 2012 at 6:20pmoh ok i get it now i think i understand. so what if there is a little number inside the little v shape it makes

- Algebra 1 -
**Jahnay**, Monday, January 9, 2012 at 6:22pmi cant make the radical sign. i don't know how

- Algebra 1 -
**Reiny**, Monday, January 9, 2012 at 6:24pmThe √ symbol means square root

If you see a little 3 inside the √ , like ∛ , then it means cube root

if you see a little 4 inside the √ , like ∜ , then it means fourth root

etc.

- Algebra 1 -
**Reiny**, Monday, January 9, 2012 at 6:26pmI am making these symbols on a Mac

I don't know how to make them on my PC, that is why most of my answers on this website are done on my Mac.

- Algebra 1 -
**Jahnay**, Monday, January 9, 2012 at 6:26pmok thank you

- Algebra 1 -
**Steve**, Tuesday, January 10, 2012 at 12:06amWhat I have done on my PC is copy and paste useful characters I have seen in other posts. I keep them in a file for later use.

I tried inserting some cool symbols I found elsewhere on the web, and a student complained they came out as little boxes. That's due to a font incompatibility. Nowadays I stick to symbols I see in Jiskha posts.

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