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Expanding this expression means multiplying the contents of the first bracket by the contents of the second. An easy way to remember this is using the FOIL method. FOIL stands for First, Outside, Inside, Las...

There are 10 sides, therefore there are 10 options each roll for what side could be shown. In probability, this means we put 10 as the denominator in the fraction. Now the condition is that a 1 is shown and ...

This question is all to do with substitution. First, rewrite the question but in instead of writing x and y, put brackets. It will look like this: 5( ) -3( ) Now inside the brackets where x and y would go wr...

The best first step for a good introduction is detailed planning. However, in an exam situation there is not much time to spend a long time planning. Luckily, there are some basic guidelines to remember when...

Epithelial tissue lines the inner surface of the stomach and provides protection. Glandular tissue produces enzymes such as proteases which can digest and break down proteins, it also secretes acid which kee...