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Expanding and simplifying, e.g. (x+4)(x-2)

To break this down easily we can use a technique called a 'Farmers Field' ! Drawing a box with a cross through the middle to make 4 mini boxes, we can then use each mini box to write out each part of the ans...
JH
Answered by James H. • Maths tutor
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What was Durkheim's study of suicide and why does it matter?

It is first necessary to understand why Durkheim carried out this study in the first place and what he was trying to achieve by doing so. As you may remember, Durkheim was a structuralist, and thus believed ...
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Answered by Alex K. • Sociology tutor
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Find the tangent for the line y=x^3+3x^2+4x+2 at x=2

Firstly, differentiate the equation y=x 3 +3x 2 +4x+2 to find the gradient function. The gradient function is dy/dx and is found to be 3x 2 +6x+4 = f'(x) after differentiation. The simple rule is to multiply...
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Answered by Wafi C. • Maths tutor
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Solve the simultaneous equations: 4x+5y = 38 , x-y = 5

Firstly number the two equations 1 and 2 for simplicity. To solve this we want to eliminate one of the variables, x or y, so we start by looking at the equations and seeing if we can add or subtract them fro...
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Answered by Ali A. • Maths tutor
4963 Views

What are the differences between aerobic and anaerobic respiration in animals?

Aerobic - requires oxygen, releases carbon dioxide and water, produces much more energy for the same amount of glucose. Anaerobic - doesn't require oxygen, releases lactic acid, much less efficient at produc...
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Answered by Musa A. • Biology tutor
18580 Views