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# Quick Maths Question (factorising) watch

1. i don't know why but i dont understand factorising;

for example: simplify the following:

3x^2 - 6x

how do you go about working that out?
2. 3x^2 - 6x

'Pull out' an x: x(3x - 6)

There's an x in each term, so you can take it out as a common factor. If you multiply out the bracket, you get what you had before.

I'm not really good at explaining stuff, but I hope that helps a bit.
3. could also be:

3x(x-2)
4. that helps but i also got some additional help from my friend who says you should simplify that out like this. So:

3x^2 - 6x

would be;

3x(x - 2)

But yours would still be correct? - i dont get that part.
5. Me2 beat me to it hehe

so both: 3x(x - 2) and x(3x - 6) would be correct?
6. (Original post by siliviax)
Me2 beat me to it hehe

so both: 3x(x - 2) and x(3x - 6) would be correct?
Yes, both are right. I evidently missed the factor of 3 .
7. (Original post by siliviax)
Me2 beat me to it hehe

so both: 3x(x - 2) and x(3x - 6) would be correct?
in a way, but factorising is usually seen (by myself anyway) as taking all of the factors outside the brackets
9. (Original post by siliviax)
Me2 beat me to it hehe

so both: 3x(x - 2) and x(3x - 6) would be correct?
3x(x-2) would be the best answer.

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