I am having a blond moment. Cant see how this is done but I know it is simple, Can someone explain please.
I have a revision Question at Uni. part of it says Multiply the top and Botom of the equation by 1+4s but i cant see how it works. please see the attachment
So here's what yo have:
If simplifying is what you are trying to do, then yes you can multiply the top and bottom by will help.
What you have in your attachment is:
Although this is a true statement, I don't think you did it right.
I think the numerator is correct, but when you multiply the denominator by it needs to look like:
In other words you need to multiply it like
So try this out and see what you get; hope this helps.