Turn on thread page Beta
 You are Here: Home >< A-levels

# Maths help watch

1. Please can someone help me factorise this expression.

3(2x-1)^3(x-1)^2+6(2x-1)^2(x+1)^3
2. (Original post by sammychu00)
Please can someone help me factorise this expression.

3(2x-1)^3(x-1)^2+6(2x-1)^2(x+1)^3
Just expand the whole lot, making very sure not to forget any terms. Use the binomial expansion as a shortcut for the (ax+b)^3 bits. You should end up with a huge quintic. I can't guarantee that what's left will factorise - if you're going to look for factors, have a look at trying to divide (either use inspection or algebraic long-division) a few factors - start with (x+1), (x+2), (x-1) etc. Use the coefficients of the x^5 and constant terms as clues as to what to try.
3. This expression does not factorise nicely, you must have made a mistake typing it.

Reply
Submit reply
Turn on thread page Beta
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: October 3, 2017
Today on TSR

### Summer Bucket List is Back!

Start yours and you could win £150!

### GCSE Physics Equations sheet!

Poll
Help with your A-levels

## All the essentials

### Student life: what to expect

What it's really like going to uni

### Essay expert

Learn to write like a pro with our ultimate essay guide.

### Uni match

Our tool will help you find the perfect course for you

### Create a study plan

Get your head around what you need to do and when with the study planner tool.

### Resources by subject

Everything from mind maps to class notes.

### Degrees without fees

Discover more about degree-level apprenticeships.

### Study tips from A* students

Students who got top grades in their A-levels share their secrets

## Study help links and info

Can you help? Study help unanswered threadsRules and posting guidelines

## Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.