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Express 2x^2 +8x +7 in the form A(x+B)^2 + C, where A, B and C are constants

2x 2 +8x+7=2(x 2 +4)+7=2((x+2) 2 -4)+7=2(x+2) 2 -8+7=2(x+2) 2 -1 A=2, B=2, C=-1
MC
Answered by Matilda C. • Maths tutor
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How do you translate the graph y = x^2, five unit squares negatively horizontally and 3 unit squares positively vertically?

Start again by drawing the graph and then the translated graphExplain what is meant by a translation ( a movement of the graph )Use a table of values to show how we can change the function to allow for diffe...
HL
Answered by Harrison L. • Maths tutor
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How do you find the stationary points of a graph?

Start by drawing an example graph which contains stationary points, use this to explain what a stationary point is. Explain how we could manipulate the graph to identify these points (explaining differentiat...
HL
Answered by Harrison L. • Maths tutor
3402 Views

How do you sketch the graph of a function?

To sketch a graph, you can follow the steps below, spiking some of them if not needed or not applicable:0 Clean up the function (makes following steps easier).1 Determine the maximum domain of definition of ...
TD
Answered by Tudor D. • Maths tutor
4596 Views

Integration by Parts

I believe that to be good at integration and maths in general practice is needed. Enough practice can give the student enough knowledge to be able to solve any question. For example, integration by parts inv...
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Answered by Filipe C. • Maths tutor
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