Could you please help me factorise this expression:
Well there are many different ways to do this, but here is one...
For any quadratic multiply a and c together to get
Now we need to find factors of the above that add up to b
and note that
So now we rewrite the b term as the sum above i.e
now group the first and last two terms to get
Now factor each grouping
Interesting... this is the same question as in
And both of the original posters are from the same country. Coincidence?