which is p = 2(l+b) where p = perimeter of a rectangle, l = length of the rectangle, b = width of the rectangle.
Here '2' is a fixed number. '2' is a constant. The letters p, l, b have no fixed value.
p, l, b are Algebra Symbols.
They can take any positive value depending upon the size of the rectangle.
p,l,b are variables.
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when you decided to give 2 chocolates per student, chocolates needed = 2xN where N = Number of students.
Here '2' is a fixed number. '2' is a constant.
The letter 'N' can take any natural number value depending upon the number of students. 'N' is a variable.
A letter symbol which can take any value (of a certain set) is called a variable.
Quantities which have only one fixed value are called constants.
NOTE: In some cases literals are also used to denote constants. In such cases, the fact will be specifically mentioned.
For example, if a is a constant and x is a variable,
and have to deal with their product, then we write their product as ax and specifically mention that a is a constant and x is a variable.
Thus Algebra Symbols are both constants and Variables.
To know about Term in Algebra, a combination of terms called Algebraic Expression, the jargon associated with Algebra Terms such as Factors of a term, Constant Term, Coefficient, Like and Unlike terms etc with Examples, Go To
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