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So when you want to expand out 2 brackets, there's a really simple method, known as FOIL. FOIL stands for "First, Outer, Inner, & Last". So if we look at the two brackets you gave as an exam...

The myelin on peripheral neurones come in the form of schwann cells. These schwann cells are essentially coils of fat that sit around the neurone and insulate it, this has two fundamental purposes.
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Prokaryotic cells are smaller and more simple than eukaryotic cells. They do not contain membrane bound organelles such as mitochondria, endoplasmic reticulum and golgi apparatus. They also do not have a ...

When given a sequence of numbers, there is often a rule using n, which symbolises the term of the sequence. For example in the sequence 3, 5, 7, 9, when n=1 it is referring to 3, since this is the first t...

First we realize that the question asks IF there is a solutionLet us start with the simplest equations, x+y=3 and 2x+y=5By subtracting the first equation from the second we see x=2 and subbing into x+y=3 ...