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How do I factorise a quadratic equation?

Firstly , make sure you agree that a quadratic equation is an equation of the form y = ax 2 + bx + c where a , b , c are (real) constants ( a is not 0), and x is the variable. (Note: the equation has an &quo...
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Answered by Gemma L. • Maths tutor
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What is the difference between a primary and a secondary effect of a natural disaster?

In the case of a natural disaster, there will be a whole range of effects. The simplest way to distinguish between these effects is to categorise them as primary or secondary. A primary effect is one that is...
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Answered by Annie G. • History tutor
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How might some Christian philosophers of religion overcome the Euthyphro Dilemma?

The Euthyphro Dilemma, which asks whether what God commands is good because God commands it or because the things God wills are necessarily good and God is adhering to this standard, might raise some issues ...
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What is Exocytosis?

Exocytosis is the process by which a cell secretes large substances (such as digestive enzymes or hormones) that have been produced inside the cell. Substances produced inside the cell are processed in an or...
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Answered by Lucy S. • Biology tutor
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How is an Action Potential produced in a neurone?

It is all to do with the movement of ions in and out of the neurone cell, which changes the potential difference accross the cell's membrane. - In a neurone's resting state, the inside of membrane is more ne...
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Answered by Lucy S. • Biology tutor
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