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Since the quadratic has roots a and b, this means it can be fatored as 2(x-a)(x-b)=0. Expanding this out we get 2x^2-2(a+b)x+2ab=0 and matching the coefficients for the terms x^1 and x^0 we get a+b=-4 and...

Diffusion can otherwise be known as the technical term for the movement of particles. It is the process where the particles in question moves from an area where it is high in concentration to an area wher...

There are four DNA nucleotides: Adenine, Cytosine, Thymine and Guanine. They are each made up of a nitrogenous base, deoxyribose sugar, and a phosphate group, and the four nucleotides differ in the struct...

A current account deficit arises when import expenditure exceeds export revenue. An increase in labour productivity implies that there is an increase in efficiency in production and also a rise in output ...

An exam answer that "explains" a passage or poem will be a less thoughtful response; if you're explaining a text, you're giving an overview of what happens (&qu...