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Firstly put the equation into the the form (x+a)(x+b) this will make things easier later on. Therefore, an equation such as (x+1) 2 would become (x+1)(x+1) Next expand the brackets. To do this simply multipl...

Firstly, form the imperfect subjunctive. To do this put the verb in the third person of the preterite (comer becomes comieron). Now drop the -ron leaving comie. Then add the Imperfect Subjunctive endings... ...

Any geometric series is defined by an initial term a , and a common ratio b . This means that we start with a and multiply by b to get each next term.And so the general geometric series is written:a r^ 0 ,a ...

Atoms in a metal are arranged in a lattice formation. What is a lattice? Imagine a grid (squares on a sheet of graph paper for example) where there is a metal atom in each square of the grid. This is called ...

Planning The key to writing a good essay introduction is to plan your answer first. This is more difficult in an exam than for a coursework essay, as you have the additional pressure of limited time. As a ge...