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AlgebraIn this section we will discuss Algebra.Till standard 6th you have studied Number system, Fractions, Decimals and integers etc. Now in this section, we shall make a beginning of the study of a new branch of mathematics known as Algebra . Besides the numerals and signs of operations of addition, subtraction, multiplication and division, algebra also uses letters(literals) from various alphabets like English, Greek etc. These letters are used either to generalize results or to represent unknown quantities and are known as letter symbols(variables). In this section, we shall first study the introduction to algebra, basic operations of addition, subtraction, multiplication and division with letters. We shall also discuss the idea of an algebraic expression, factorization, linear equation in one and two variables, polynomial, quadratic equation and set theory. ax + by + c = 0 or ax + by = c, where a and b are coefficient of x and y respectively , c is a constant term and they are real numbers, 'a' is not equal to zero (a≠0) ,'b' is not equal to zero(b ≠ 0) and x and y are variables , is called a Linear equations in two variables.
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