Asked by Jahnay

Am i on the right track?

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?


Answered by Damon
yes
Answered by Reiny
1st: but what is √9 ?

2nd: √(2x) √(2x) = √(4x^2) = 2x
generally: √a√a = a

3rd: √14 √2
= √28
= √4√7
= 2√7
Answered by Jahnay
oh ok so i have to simplify everything for it to be correct right?
Answered by Jahnay
except i don't understand your second point. I'm lost right there.
Answered by Reiny
yes, 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
Answered by Henry
post it.
Answered by Jahnay
oh ok i get it now i think i understand. so what if there is a little number inside the little v shape it makes
Answered by Jahnay
i cant make the radical sign. i don't know how
Answered by Reiny
The √ 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.
Answered by Reiny
I 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.
Answered by Jahnay
ok thank you
Answered by Steve
What 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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