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How do I find the roots of a quadratic equation?

A quadratic equation has the form ax² + bx + c Our goal is to find values of x such that ax² + bx + c = 0These values of x are known as the "roots" of the quadratic.

Answered by Zach T. • Maths tutor

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Explain the lock and key model of enzyme action, including how they are denatured. [6 marks]

The first step is to read the question and ensure that the student understands all of the terminology. For example, make sure the student knows what is meant by ‘explain’, ‘enzyme’, and ‘denatured’. Then ...

Answered by Bryony H. • Biology tutor

12966 Views

What are the different types of renewable energy sources?

There are various renewable energy sources in existence which utilize the natural resources of the planet, such as wind, sun, biomass, wave power, geothermal. The energy produced varies considerably, and ...

Answered by Lydia K. • Environmental Studies tutor

1723 Views

How do you work out the median of a set of numbers?

The median is the middle number of a set of ordered numbers, i.e. halfway along. To find the median of the data set you should arrange the numbers into order, lowest to highest. Count equally from both en...

Answered by Lydia K. • Maths tutor

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Use BIDMAS to answer 2 + 7 x 10

Using BIDMAS we know that we should do multiplication before addition and therefore we would get, 7 x 10 which is 70 and then 2 + 70 which is 72.This is really important to have rule about orders of opera...

Answered by Eleanor B. • Maths tutor

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