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How do I know which quotes to learn?

When revising for English Literature exams, it is crucial that you judiciously select the quotes that will get you the most mileage in an exam. Make a bank of 10-20 quotes for each text you study that you...

Answered by Jessica F. • English Literature tutor

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Expand the following : (2x+3)(x-1)

We multiply the 2x in the first bracket by everything in the second bracket to give: 2x²-2xWe then multiply the 3 in the first bracket by everything in the second bracket to give: 3x-3Putting 2...

Answered by Samuel S. • Maths tutor

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In a titration, 45.0 cm^(3) of 0.100 mol dm^(-3) sodium hydroxide solution is exactly neutralised by 40.0 cm^(3) of a dilute hydrochloric acid solution. Calculate the concentration of the hydrochloric acid solution in mol dm^(-3).

First of all, summarise everything that you know in a table or in brief notes:NaOH, 45 cm^(3), 0.1 mol dm^(-3)HCl, 40 cm^(3)The first thing that you need to do is to find the number of moles of NaOH. This...

Answered by Lauren J. • Chemistry tutor

5744 Views

How to complete the square to solve quadratic equations?

Equation: x²+4x-5=0 (This is in the form ax²+2bx+c=0)First divide 2b by 2 (4/2=2)Then put this into (x+b)²-(b)²+c=0This gives: (x+2)²-(2)²

Answered by George J. • Maths tutor

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For a large-scale water management project, describe one cost and one benefit.

The Three Gorges Dam was built in China as a large-scale water management project. A benefit of the Three Gorges Dam is that it provides hydroelectricity to the surrounding area. A cost of the Three Gorge...

Answered by A B. • Geography tutor

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