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# Indices and Factorising Tweet

Maths and statistics discussion, revision, exam and homework help.

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1. Indices and Factorising
How would you do...

/

Also

A factorising question is:

The answer i got was: (2x-6)(x-1)

The book says: (2x-3)(x-2)

2. Re: Indices and Factorising
(Original post by IgorYakov)
How would you do...

/

Also

A factorising question is:

The answer i got was: (2x-6)(x-1)

The book says: (2x-3)(x-2)

For the first question remember

For the second, multiply your answer out and check to see if you get the original question.
3. Re: Indices and Factorising
(Original post by IgorYakov)
How would you do...

/

Remember,

You will need to use the law,
4. Re: Indices and Factorising
Expand the brackets using the foil method and see where you have gone wrong.
5. Re: Indices and Factorising
(Original post by IgorYakov)
A factorising question is:

The answer i got was: (2x-6)(x-1)

The book says: (2x-3)(x-2)

6. Re: Indices and Factorising
(Original post by hassi94)
For the first question remember

For the second, multiply your answer out and check to see if you get the original question.
OP, please don't see the spoiler, you will get confused.

Spoiler:
Show

Can't we expand and divide it by
7. Re: Indices and Factorising
(Original post by raheem94)
OP, please don't see the spoiler, you will get confused.

Spoiler:
Show

Can't we expand and divide it by
Spoiler:
Show
Ahahahaha brilliant. This is definitely the best way to do it!
8. Re: Indices and Factorising
(Original post by hassi94)
Spoiler:
Show
Ahahahaha brilliant. This is definitely the best way to do it!
Spoiler:
Show

Actually the question posted on the thread the other day was exactly the same, see the link: http://www.thestudentroom.co.uk/show...2#post37468612
9. Re: Indices and Factorising
(Original post by raheem94)
Spoiler:
Show

Actually the question posted on the thread the other day was exactly the same, see the link: http://www.thestudentroom.co.uk/show...2#post37468612
Yeah I recognised it as soon as I saw it
10. Re: Indices and Factorising
(Original post by hassi94)
Yeah I recognised it as soon as I saw it
Just wondering..

Spoiler:
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Is it really worth expanding ? In my opinion it's easier to just change the into and then use the standard law of division.
11. Re: Indices and Factorising
(Original post by ThatPerson)
Just wondering..

Spoiler:
Show
Is it really worth expanding ? In my opinion it's easier to just change the into and then use the standard law of division.
Spoiler:
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We know it!
Have a look at this link, this question was also posted 2 days ago and someone suggested to expand 2^30.
12. Re: Indices and Factorising
(Original post by ThatPerson)
Just wondering..

Spoiler:
Show
Is it really worth expanding ? In my opinion it's easier to just change the into and then use the standard law of division.
Expanding is a bad idea, we were just kidding around because of a poster who suggested it the other day. The method you stated is by far the best and is what both me and raheem would do.