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Expand and simplify (x+3)(x+5)

The easiest method for expanding these brackets is to use the FOIL method of expansion. This ensures you multiply every aspect of the brackets together. First - take the first terms of the brackets (so, x an...
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Answered by Adam D. • Maths tutor
62026 Views

How to solve simultaneous equations?

Let's say we have two equtions: 3x + y = 8 5x + 2y = 14 In order to solve them, we need to bring one of the coefficients to the same number. Let's say we do that with y. So: 6x + 2y = 16 5x + 2y = 14 Now, we...
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Answered by Kamila W. • Maths tutor
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A metal sphere of radius 15cm is melted down and recast into a solid cylinder of radius 6cm. Calculate the height of the cylinder.

Using the eqauation for volume of sphere (V=4/3 pi r^3) calculate the volume of the original sphere. This comes to 14137.2 cm^3 (1dp). The new cylinder formed has the same volume. Therefore, you can use the ...
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Answered by Sameerah K. • Maths tutor
14438 Views

Which is the difference between "imperfetto" and "passato prossimo" in Italian? When do you use the firts and when do you use the second?

The difference between the Italian imperfetto and passato prossimo can be tricky but it is important to understand it well and to demonstrate its correct use at GCSE level. We use passato prossimo for: -acti...
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Answered by Claudia T. • Italian tutor
3397 Views

My teacher tells me I need greater focus on the question in my essays. How can I do this?

The best way to ensure a clear focus on the question throughout your essays is to plan beforehand. I like to make sure I have written 4-5 points on a scrap of paper, along with a link back to the question fo...
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Answered by Aedan F. • History tutor
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