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x² - 6x + 9The method for factorising quadratics is to find 2 numbers that add to make the 'x' term (-6x in this case), and multiply together to make the final term (+9 in this case). Factors o...

In approaching an essay question like this you need to consider the time span in question. After this, plan the question and separate your answer into three key factors. One of the three key factors in yo...

A number to the power of 1/2 is the same as square rooting (√) the number, therefore 64^1/2 is equal to √64.Remember that it can be the positive or the...

Read Spanish newspapers and note down any interesting words and test yourself on them (only has to be about 10 a day). Especially good for political/environmental articles as these are subjects which gene...

The primary structure of a protein is determined by the sequence of amino acids in the polypeptide chain. This amino acid sequence is directly coded for by the sequence of codons in the mRNA. As the mRNA ...