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# Simple Maths questions. Watch

1. 1. Simplify √24 +√6. I got 5√12...is this correct?

2. Express (fraction) 36 which is over 5-√7 in the form a+b√7, where a and b are integers. I got 10+2√7...is this correct?

3. Make X the subject of this formula: (its a fraction) 'a', over (x-b)^2=c (the whole fraction equals C, not the (x-b)^2)

^^ I cant seem to get a reasonable looking answer for no.3.
2. 1. No, the answer is in terms of √6 only, just simplify the √24 into √6's.

2. Yes it is

3. What answer did you get?
3. simple?
4. (Original post by CJN)
1. No, the answer is in terms of √6 only, just simplify the √24 into √6's.

3. What answer did you get?
I got a^2+b (all over) c^2 =x (whole fraction equalling x not the c^2)
Right or not? If not whats the right answer?

And is the answer to Q1. 4√6?

Thanks.
5. √24 + √6 is not 4√6
√24 => √4√6 => 2√6

2√6 + √6, which is 3√6 not 4
6. I got 3√6 for Q1

√24 broken down to √6*√4, so that's 2√6.

2√6 + √6 = 3√6

My maths is a bit rusty so I don't exclude being completely wrong
7. (Original post by Saif95)
I got a^2+b (all over) c^2 =x (whole fraction equalling x not the c^2)
Right or not? If not whats the right answer?

And is the answer to Q1. 4√6?

Thanks.
What is root 24 in terms of root 6?
8. (Original post by Nucleo)
√24 + √6 is not 4√6
√24 => √4√6 => 2√6

2√6 + √6, which is 3√6 not 4
(Original post by ryan84)
What is root 24 in terms of root 6?
Yh thanks I get it now...

can you tell me if my answer to the 3rd question was right? if not what is it?
thanks.
9. (Original post by Saif95)
Yh thanks I get it now...

can you tell me if my answer to the 3rd question was right? if not what is it?
thanks.
Not sure what you are doing, but:

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