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This is simple as long as you remember FOIL:
First

Outside

Inside

Last

So, for example, let's multiply out (2x+1)(4x-3)

Multi...

The first law is that an object will remain at a constant velocity or stationary (which is just a constant velocity of zero) unless acted upon by an external force.

Once acted upon by thi...

The way to find the length of one side of a triangle can be to use SOHCAHTOA, an abbreviation learnt to help rememeber the process. SOH stands for sin = opposite / hypotenuse , CAH stands for cos = adj...

The four chambers include the right and left atrium and the right and left ventricle 

Osmosis can be described as the movement of water from a high concentrated area to a low concentrated area, through a selectively permeable membrane