Definition
ALGEBRA treats of quantities as in Arithmetic, but with greater generality; for while the quantities used in arithmetical processes are denoted by figures which have one single definite value, algebraical quantities are denoted by symbols which may have any value we choose to assign to them.
The symbols employed are letters, usually those of our own alphabet. We begin with the definitions of Algebra, premising that the usual symbols of operation (additions, subtractions, multiplications and divisions) will have the same. Meaning as in arithmetic
Algebraic-al expressions
An algebraic al expression is a collection of symbols; it may consist of one or more terms, which are separated from each other by the signs. ( +) And (-).
For example
Thus 7a + 56 – 3c – x + 2y is an expression consists in five terms
For example: 5a +30 – 26
Types of Arithmetical Expressions
Arithmetical Expressions are either simple or compound
1. A simple expression consists of one term,
For example: 5a.
2. A compound Expression consists of two or more terms.
For example: 7a + 56 – 3c – x + 2y.
Types of Compound expressions
Compound expressions may be further distinguished
1. Binomial expression;
Thus an expression of two terms, as, is called a binomial expression.
For example: 3a – 2b
2. Trinomial expression;
Thus an expression one of three terms, is called a trinomial expression.
For example: 2a – 3b + c
3. Multinomial expression;
Thus an expression one of more than three terms is called a multinomial expression
7a+5b-3c-d+2f.