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Expand the brackets (x-3)(x+4)

When dealing with questions to do with expanding brackets, you must multiply every term in one bracket with all the others in the second bracket. So for this question, we can see we have 4 terms in total: Le...
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Answered by Ameer A. • Maths tutor
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Solve these simultaneous equations. 2x + y = 18 x - y = 6

With simultaneous equations there is more than one unknown. First we’ll get one unknown on its own so we rearrange the bottom equation to get x on its own. By adding y to each side of the equation this leave...
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Answered by Lizzie S. • Maths tutor
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Find the value of x: x^2-3x-3=1

To begin this question you need to bring all of the terms to one side, so the equation equals 0. It is easiest to do this by subtracting 1 from each side.x^2-3x-3-1=1-1x^2-3x-4=0Now we need to factorise the ...
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Answered by Emma H. • Maths tutor
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History GCSE Cold War - Why did the Soviet Union invade Hungary in 1956?

Structure of the answer: This essay should include a clear introduction, between 2 - 4 clear and distinct paragraphs, and a conclusion. The introduction should lay out your main arguments and demonstrate to ...
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Answered by Elizabeth A. • History tutor
9544 Views

What is the equation of the straight line perpendicular to the midpoint of the straight line that passes through (0,5) and (-4,7)?

Firstly, it's important to note that the question concerns straight lines, so it will be possible to express the answer in the form y=mx+c where m is the gradient and c is the y-intercept.To start, we need t...
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Answered by Adam L. • Maths tutor
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