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It is first important to get the equation to equal 0, so to do this you minus 12 from each side of the equals symbol, giving youX^2 +13X+36=0Now it is time to think about factorising!The best trick for this ...

The way that papers are set is that you usually can allow just over a minute for each mark. This means if a question is 6 marks, it should take about 6 minutes to answer. It is generally a good idea to be qu...

There are a list of set verbs which always take the verb etre as their auxilliary in the perfect tense which you will need to learn. To help you remember them you can use the mnemonic MR V DREAMPANTSMourirRe...

first: can tell 4 tones in pinyin. second: increse the proper local Chinese words. third: start from building simple sentences.

Temperature, pressure, surface area and concentration all affect the rate of a chemical reaction. Temperature makes the particles more energetic and increases the frequency of collisions Pressure, surface ar...