x Turn on thread page Beta
 You are Here: Home >< Maths

# Factorising watch

1. How do you factorise?
y=6x^2 - 13x - 8
2. (Original post by Custardcream000)
How do you factorise?
y=6x^2 - 13x - 8
How you would usually factorise it, but a bit tricker as there is an 'a' term.
Spoiler:
Show
If an equation is of the form ax^2 + bx + c, then you want two numbers that multiply to give (a*c) (in this case 6*-8) and add to give b (in this case -13) if that rings any bells.
3. (Original post by Custardcream000)
How do you factorise?
y=6x^2 - 13x - 8
Think of two numbers that multiply to give -48 and add to give -13 and SeanFM said above. Then try to re-write the equation using those new two numbers so 6x^2 ... .... - 8 = 0
Then, we'll guide you next unless you know what to do .

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: November 4, 2015
Today on TSR

### Loughborough better than Cambridge

Loughborough at number one

Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams