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Firstly, you must always check any accompanying text with the source which could provide the date of publication and potentially where it was published or written. Once this is established you may use you...

ax² + bx + c
1) First factorise the quadratic equationTwo numbers whose product is 'c' and sum is 'b'In this question, c= 6 and b= 76 x 1 = 6 and 6 + 1 = 7So your two numbers are 6 and 1--...

Site of protein synthesis. RNA is transcribed in the nucleus and travels to the ribosomes on the endoplasmic reticulum (which are located in the cell cytoplasm) for translation/protein synthesis.

Immunisation introduces a specific antigen into the body. This is recognised as foreign and stimulates B lymphocytes to produce plasma cells and memory cells. Plasma cells go on to secrete specific antib...

Don't panic, focus on what you do know.You know 6/n * 5/(n-1) = 1/3or 30/(n^2-n) = 1/3simplify this to reach the target expression.