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The quadratic equation 2x^2-8x+1 = 0 has roots a and b. Find the value of a + b and ab

There is no need to solve the quadratic equation here. Use the formulae for the sum and product of roots where: a+b = -b/a and ab = c/a Therefore in this instance: a+b = -(-8)/2 = 4 and ab = 1/2
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Answered by Alok K. • Maths tutor
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To what extent is the national minimum wage beneficial to society?

Always begin answering questions by providing a definition. This is key in economics. Therefore, start by explaining that the national min. wage is the governments guarentee of a minimum wage per hour that i...
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Answered by Connor S. • Economics tutor
10108 Views

How to translate complex Latin sentences?

In the GCSE Latin language papers you will inevitably come across some sentences that require a bit more attention and care to render an appropriate translation. Although these sentences may appear intimidat...
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Answered by Felix O. • Latin tutor
20603 Views

How do I calculate the relative formula mass of Calcium carbonate (CaCO3)

The relative formula madd of a compound comes from the total mass of all of the elments within the compound. So in the case of calcium carbonate (CaCO 3 ) we have; 1 x Ca 1 x C 3 x O So we first need to know...
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Answered by Jenny B. • Chemistry tutor
84807 Views

What is form?

Form refers to the type of text, for example novel, haiku, sonnet, that the writer has used. It is significant because the writer has deliberately chosen the form in order to best convey the themes or charac...
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Answered by Sophie C. • English tutor
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