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Differentiate f(x) = 3x^2+5x+3

Remember the rules for differentiation? We take each term which looks like ax n where a and n are just numbers and we turn it into: (an)x n-1 So for this example, we go term by term and get: f'(x) = 6x 2 + 5...
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Answered by Alok K. • Maths tutor
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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
10248 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
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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
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