Posted by Jim on Monday, September 17, 2007 at 11:09pm.
I need someone to check my homework answers. I don't really know this stuff but i'm trying to do better in math this year. I didn't understand how to do some either.
1. √12
I got 2√3
2. √9a^3
I got 3a
3. √8 * √2
I got 4
4.3√50
I got 15√2
5. √32
I got 4√2
6. √18a3 (all together)
I don't know how to do this one
7. 3√12b^2 (all together)
I got 6b√3
8. 4/√2
I got 2√2 (these confuse me the most)
9. √10/√2
I got √20/2
10. 2√3/2 (two square root three over two together)
I don't know how to do this one either
11. 3√3  √27
Is it √3?
12. 2√50 + 3√32
I don't know how to do this one.
It would mean a lot if someone could help me. I'm not a bad student but i hate math. If i could understand it i could probably like it more.

Math  drwls, Tuesday, September 18, 2007 at 12:39am
In many of your questions, I can't tell how much is supposed to be under the ã sign, so I cannot answer them with confidence.
The following are correct: 1,3,4,5,8
9: ã10/ã2 = ã5*ã2 /ã2 = ã5
10. 2 sqrt (3/2) = (2 /sqrt 2)*sqrt 3 = sqrt 2 * sqrt 3 = sqrt 6
11 No. It is 0
12. 2 sqrt 50 + 3 sqrt 32
= 2 sqrt (25*2) + 3 sqrt (16*2)
10 sqrt 2 + 12 sqrt 2 = 22 sqrt 2
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