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The difference between 'ser' and 'estar' is mainly whether you are describing something permanent. If I were to say that 'I have blue eyes', then I would use 'ser', as this is something that cannot change. '...

Start with what's called a topic sentence- it says "Hello, this paragraph is about this". Then, you can add evidence, and analysis. Think about using the paragraph structure P, E, E:Point- this is ...

QUESTION: Given the equation x 3 -12x 2 +ax-48 = 0 has roots p, 2p and 3p, find p and a. Roots mean x = p, x = 2p and x = 3p hence (x-p), (x-2p) and (x-3p) are factors of the equation. Expanding these three ...

You first have to think about the properties of a prime number, the key characteristic is that prime numbers can only be divided by itself and 1, so If we prove that any other number can divide the number, t...

A full electron configuration shows the amount of electrons in each shell and subshell of an element or ion. Shells (also called energy levels) progress from 1 to 4, with 1 being the closest to the centre of...