An algebraic Expression is one or more algebraic terms used to express a concept. The basic building blocks of an Algebraic expression are variables and constants and operating symbols such as plus, minus signs.
Algebraic expressions are just a set of variables and constants that are separated by plus or minus signs.
Algebraic Expressions are usually having w=two terms are called as binomial.
This expression generally contains more than two terms with non-negative integral components of variables is known as a Polynomial.
1. Numeric Expression consists of numbers; never include variables.
Constants are that part of the algebraic expression that involve only numbers. We call them constants because the value is always the same. It is definite. There are no variables in the term that can change the value of the constant. The number 8 is a constant, because it has a particular value, and it is known to everyone. It can’t be changed. In the expression 3XY – 4 = 2Y, the second term 4 is the constant. 3XY cannot be a constant because the values X and Y can be varied, and hence will vary the entire term 3XY.
In an algebraic expression, the letters represent variables. They are not constant; the value of these terms can be changed from time to time. In the expression 2y+3x=0, the values x and y represent variables. Y can be 2,3, or any number and x can also be any number that satisfies the equation. More than one value can be substituted for the letters in an algebraic expression.
Consider the type statement ‘4x+2y=12.’