Homework Help: Algebra 1

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

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?

Algebra 1 - Damon, Monday, January 9, 2012 at 6:05pm
yes
Algebra 1 - Reiny, Monday, January 9, 2012 at 6:05pm
1st: 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 6:08pm
oh ok so i have to simplify everything for it to be correct right?
Algebra 1 - Jahnay, Monday, January 9, 2012 at 6:09pm
except i don't understand your second point. I'm lost right there.
Algebra 1 - Reiny, Monday, January 9, 2012 at 6:14pm
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
Algebra 1 - Henry, Monday, January 9, 2012 at 6:20pm
post it.
Algebra 1 - Jahnay, Monday, January 9, 2012 at 6:20pm
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
Algebra 1 - Jahnay, Monday, January 9, 2012 at 6:22pm
i cant make the radical sign. i don't know how
Algebra 1 - Reiny, Monday, January 9, 2012 at 6:24pm
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.
Algebra 1 - Reiny, Monday, January 9, 2012 at 6:26pm
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.
Algebra 1 - Jahnay, Monday, January 9, 2012 at 6:26pm
ok thank you
Algebra 1 - Steve, Tuesday, January 10, 2012 at 12:06am
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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