### Factorise in maths

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Messages: 1 - 3 of 3
• #### Message 1.

Posted by knara (U15489439) on Saturday, 3rd November 2012

What do you do when it asks you to factorise a number in the paper it says :- Factorise 5X2 a small to on the top of the X, - 10=
but i don't know how you do it so of you know how to do it please help me i have exam on monday so i need your helps+ it is non calculator exam thanks for you help

• #### Message 2

, in reply to message 1.

Posted by Maths Teacher BBC (U15178780) on Wednesday, 7th November 2012

5x2 – 10
= 5 ( x2 – 2)

This is factorising by taking out a common factor of 5 within each number.

• #### Message 3

, in reply to message 1.

Posted by U15497784 (U15497784) on Sunday, 11th November 2012

What do you do when it asks you to factorise a number in the paper it says :- Factorise 5X2 a small to on the top of the X, - 10=
but i don't know how you do it so of you know how to do it please help me i have exam on monday so i need your helps+ it is non calculator exam thanks for you help
HELLO
factorising is very simple, it is the opisite to simplifying so instead of multiplying out you will put the simplified expression into brackets for example:
6pq+4hp
now find what multiples go into 6 and 4. Number 2 goes into 6 and 4. start with putting 2 and any common letters infront of the bracets then put the remaining numbers and letters inside the brackets:
2p(3q+2h)

we can now check it by multiplying out
2px3q+2px2h=6pq+4hp

and thats it really, hope that helped

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