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Work out the integer values that satisfy: x^2−7 x+ 11<0

It's easier if we first visualise the function on a graph, then we can see in which regions it is negative. From there we can see which integer values lie in this region. A positive quadratic function has th...
JP
Answered by Jamie P. • Maths tutor
8982 Views

When should I use the imperfect and preterite past tenses in Spanish?

Good question. This can be confusing because we don't always have the same markers for these two tenses in English. Try to remember the preterite as one single action or time period, and the imperfect as eit...
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Answered by Zoe G. • Spanish tutor
2572 Views

GCSE English Language Paper 1, Question 5: Student presented with a picture of a lake. Question: Describe a journey inspired by this picture

If working on a question like this I would encourage and push a student in a number of specific directions. What the question wants is a detailed, engaging description of a particular place, with a person - ...
MY
Answered by Marco Y. • English tutor
5625 Views

Solve the simultaneous equation: y=x^2+2x-2 y=4x+6

You want to make the equations equal one another. If both equal y it can be written like this: x 2 +2x-2=4x+6Then simplify by putting the terms on one side and equaling 0: x 2 -2x-8Now put into brackets: (x-...
RD
Answered by Rosie D. • Maths tutor
4373 Views

How would I structure an answer to this question: Which of the following was the more important reason why the Weimar Republic was in danger in the years 1919–1923: economic problems or political unrest? (taken from an AQA past paper)

First, you should pick out the key words of the question. In this case, the question is asking you specifically about two factors, economic problems versus political unrest. This means you shouldn't discuss ...
CC
Answered by Carlo C. • History tutor
3916 Views