Hi All, this is not homework, just some basic revision for my own personal understanding, it's a long time since I went to school?(adsbygoogle = window.adsbygoogle || []).push({});

I would like to refresh my mind on the following algebra please.

4ax + 2ay = 2a x 2x + 2a x y

= 2a(2x + y)

Sorry for not using the DOT product as it does not seem to be available, so had to use X for multiplication?

My misunderstanding of the above is, what happend to the 2a on the right hand side of the first line above?

I understand that 4ax is made up of 2a x 2x = 4ax, and I understand that 2a(2x is made up of the 4ax, but i can't get my head round where the 2a went on the right hand side?

any help greatly appreciated

David

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# 2a x 2x = 4ax

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