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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...

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 w...

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 ...

The key difference between the imperfect and the passé composé is that the imperfect is used to describe incomplete actions and the passé composé is used to decscribe complete actions. B...

A see-saw represents a pivot, for the see-saw to balance the moment on the left hand side has to equal the moment on the right hand side. Moment =  Force * distance Therefore the moment of the right hand ...