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For any equation in the form ax^2+bx+c and a=1, the first step is to find a set of numbers. In this case, they must add up to 8 (b) and multiply to 15 (c). With trial and error, it can be found that these ar...

This depends on the path of the object and what information you have. You could be looking at conservation of kinetic and gravitational potential energy. Total energy must be the same at all times. We can ma...

What does this inequality sign mean? That A "is greater than" B. We can treat inequalities as if they are = signs as long as we don't multiply or divide by negative numbers. What would happen then?...

First - and this sounds really obvious but you'd be surprised how many people forget - read the question carefully. Does it look like a simple 'yes' or 'no' question (at A-Level, this is rarely the case)? Is...

Cells are the micro building blocks of all living organisms, and though there are many different kinds allowing us to have many different functions, we will focus on the basic ones associated with animals, p...