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i) (2sqrt(7))² = 2²  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)) = (...

64/4/4=4

4x4=16

n.b no square root function on my divice

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 compl...

They defend the body against diseases by producing antibodies

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 125/1...