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First of all, we have to raise to the power of two the first equation and will obtain: p^2 + 5q = 64. 
We have to proceed the same for the second equation and will obtain: p^2 - 3q = 36. 
S...

The key to GCSE History exam long questions is key factual detail. It is imperative that you know precise factual detail to back up every point. This means dates, facts and relevant key factual informa...

Definite articles are used when we talk about something specific. There are four definite articles: La (femenine, singular), Las (femenine, plural), El (masculine, singular), Los (masculine, plural). For ...