Algebraic notation is a way of expressing mathematical ideas concisely. In algebra, letters (a, b, c, d, …, x, y, z,∝, β, etc) are used to represent unknown qualities.
is the same as . In algebra, is or just .
is , since we have three added together.
stands for and stands for .
is written simply as without the multiplication sign in the middle. .
can be simplified to to give
Remember that is the same as , is the same as , is the same as , etc.
Usually, in an equation you could see , which means or ‘6 multiplied by y’. We leave out the multiplication sign to make the equations look more elegant and neater when dealing with them. The number that is used to multiply a number is called the coefficient.
In the expression :
It is also important to note that fractions are another way to express division. For example, is expressed as
Let’s look at some examples
Simplify the following