Introduction to algebraic expressions
Introduction to algebraic expressions:-An algebraic expression is an expression which involves variables and operations.-The variables are indicated using alphabetical letters. -The numbers before the letters are known as the co-efficient.-The numbers which stands on their own without the variables in the expression are known as constants.-Each part of an Expression which is separated from the others by an operation is called a term.-Like terms are the terms in the expression which have the same letters and same power of the letters.Example 1.An electrician charges sh 450 per hour and spends sh 200 a day on gasoline. Write an algebraic expression to represent his earnings for one day. Example 2.Write each phrase as an algebraic expression.i).Nine increased by a number rii).Fourteen decreased by a number x iii).Six less than a number t.iv).The product of 5 and a number n.v).Thirty-two divided by a number y.