Study Online and Download Notes of Mathematics 9th Unit 4: Algebraic Expressions and Algebraic Formulas. Algebra is a generalization of arithmetic. Recall that when operations of addition and subtraction are applied to algebraic terms, we obtain an algebraic expression.

Study Online and Download Notes of

**Mathematics 9th Unit 4: Algebraic Expressions and Algebraic Formulas**. Algebra is a generalization of arithmetic. Recall that when operations of addition and subtraction are applied to algebraic terms, we obtain an algebraic expression.

After studying this unit, the students will be able to:

- Know that a rational expression behaves like a rational number.
- Define a rational expression as the quotient p(x )/q(x ) of two polynomials p(x) and q(x) where q(x) is not the zero polynomial.
- Examine whether a given algebraic expression is a polynomial or not, rational expression or not.
- Define p(x)/q(x) as a rational expression in its lowest terms if p(x) and q(x) are polynomials with integral coefficients and having no common factor.
- Examine whether a given rational algebraic expression is in lowest from or not.
- Reduce a given rational expression to its lowest terms.
- Find the sum, difference and product of rational expressions.
- Divide a rational expression with another and express the result in it lowest terms.
- Find value of algebraic expression for some particular real number.

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