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Factorise x^2 - 6x + 9 = 0

x 2 - 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 of +9 are: 1x9...
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Answered by Kate B. • Maths tutor
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To what extent was terror the enabling factor for Stalin's control over the Party in the years 1928-53?

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 your ...
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Answered by Anysa R. • History tutor
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What is 64^1/2 equal to?

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 negative square roots, so it could be 8 2 or -8 2 .
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Answered by Kate B. • Maths tutor
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How do I expand my vocabulary and write more sophisticated phrases in my essays?

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 general...
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Answered by Anushka S. • Spanish tutor
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Explain how 2 different types of mutations in a gene can result in the loss of an enzyme's function

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 is ...
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Answered by Alexander W. • Biology tutor
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