Top answers

How do I expand out a pair of brackets?

Expanding something out like (x+2)(x+3) crops up everywhere in maths. Therefore it's a very important skill to develop.There are many different ways of looking at it - smily faces, rainbows, claws - to name ...
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Answered by Cordelia W. • Maths tutor
6852 Views

How do I simplify surds?

Easy! We first consider which number is in the square root. Then we look at it's factors:- if any of factors are square we can immediately take their root out of the overall square root. Once all the square ...
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Answered by Cordelia W. • Maths tutor
8316 Views

How do the hydrophobic and hydrophilic properties of phospholipids help maintain the structure of cell membranes?

The cell membrane is comprised of molecules with a phosphate head and hydrocarbon tail. The phosphate heads are polar, therfore they are hydrophilic and form favourable interactions with water, so line the o...
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Answered by Alexis B. • Biology tutor
16565 Views

How do I differentiate?

Differentiation is a relatively easy process once you learn the basic method. The basic rule is, you multiply the coefficient of x by the exponent, which becomes the new coefficient, and then reduce the expo...
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Answered by Alexis B. • Maths tutor
8072 Views

What is the best way to study for a Maths exam?

Lots and lots of past paper questions! Any other questions as well really. When it comes to maths, practice makes perfect. Every time that you answer questions from a specific topic, you develop an extra bit...
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Answered by Shyam S. • Maths tutor
5011 Views