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i) Simplify (2 * sqrt(7))^2 ii) Find the value of ((2 * sqrt(7))^2 + 8)/(3 + sqrt(7)) in the form m + n * sqrt(7) where n and m are integers.

i) (2 sqrt(7)) 2 = 2 2 sqrt(7) 2 = 4 * 7 = 28 (1 mark) ii) First of all substitute the answer from above. ((2 * sqrt(7)) 2 + 8) / (3 + sqrt(7)) = (28 + 8) / (3 + sqrt(7)) = 36 / (3 + sqrt(7)) Multiply by (3 ...
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Answered by Andrew B. • Maths tutor
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Work out 64^2/3

64/4/4=4 4x4=16 n.b no square root function on my divice
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Answered by Thomas L. • Maths tutor
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Can a bad person ever do a good thing?

For this question, it is important to answer the question at hand . This means take the question at face value and try and answer it in the format it is given, instead of answering a completely different que...
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Describe the function of white blood cells

They defend the body against diseases by producing antibodies
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Answered by Nimshi M. • Biology tutor
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How would you convert the decimal 0.125 into a fraction in its simplest form?

0.125 is the same as 125/1000. This is because we have to remove the decimal point before creating a fraction. So 0.125 times by 1000 is 125 and at this point the decimal point has been removed. But 125/1000...
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Answered by Tutor61277 D. • Maths tutor
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