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How do I find the roots of a quadratic equation?

A quadratic equation has the form ax 2 + bx + c Our goal is to find values of x such that ax 2 + bx + c = 0These values of x are known as the "roots" of the quadratic. Exercise: Find the roots of x...
ZT
Answered by Zach T. • Maths tutor
3677 Views

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 the...
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Answered by Bryony H. • Biology tutor
13313 Views

What is comparative advantage?

Comparative advantage is when a firm or country can produce a good at a lower opportunity cost than another firm or country. Opportunity cost refers to the value forgone when alternative is chosen. By countr...
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Answered by Talia S. • Economics tutor
4157 Views

Calculate the derivative of x^x

This problem is best solved using implicit differentiation and by tackling each side of the equation individually. First write down the problem as "y = x^x". Recalling that log rules can be used to...
GH
Answered by George H. • Maths tutor
4279 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 it ...
LK
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