An

The elements whose product forms a term of an algebraic expression are called the factors of that term. The numerical factor of a term containing a variable is called the

Algebraic expressions that contain only one term are called

Algebraic expressions that contain only two terms are called

Algebraic expressions that contain only three terms are called

Algebraic expressions with all variables having whole number exponents or powers are called

An equation is true for only certain values of the variables and need not be true for all values of the

The four standard identities that we are going to learn in this lesson are:

**expression**having one or more variables is called an algebraic expression. An algebraic expression may or may not contain mathematical operators like the symbols of addition, subtraction and multiplication. The quantities in an algebraic expression - variable, constant or combinations of both, joined by plus or minus signs, are called its terms.The elements whose product forms a term of an algebraic expression are called the factors of that term. The numerical factor of a term containing a variable is called the

**coefficient of the term**.Algebraic expressions that contain only one term are called

**monomials**.Algebraic expressions that contain only two terms are called

**binomials**.Algebraic expressions that contain only three terms are called

**trinomials.**Algebraic expressions with all variables having whole number exponents or powers are called

**polynomials.**The expressions in which the powers of variables are negative or rational numbers are not polynomials.An equation is true for only certain values of the variables and need not be true for all values of the

**variables**. If it is true for all values of the variables in it, then it is called an**Identity**. These identities are obtained on multiplying one binomial with another binomial and are known as**Standard Identities**.The four standard identities that we are going to learn in this lesson are:

- (a + b)
^{2}= a^{2}+ 2ab + b^{2} - (a - b)
^{2}= a^{2}- 2ab + b^{2} - (a + b)(a – b) = a
^{2}– b^{2} - (x + a)(x + b) = x
^{2}+ (a + b)x + ab

Educationkranti provides Chapter-wise tests and full-course Model Papers for each subject will help you gain more than enough practice before exams. Take an online test and test your concepts covered in our video lesson. It will be conducted in real time, helping you prepare more effectively for real tests. These papers are designed by Educationkranti experts to ensure availability of standardized tests for every student.

- Chapter-wise tests to help you assess your preparation status after studying a chapter.
- Detailed solutions for all the tests help students compare their solutions with model answers provided.
- Unlimited tests for extensive practice.

Highlights of important concepts in a chapter, written in easy language serve as valuable notes for use during the revision sessions before exams. These crisp revision notes along with key diagrams & illustrations help save valuable time and reinforce concepts already studied in the chapter.

- Notes are organized chapter-wise for quick and easy reference.
- Available in easily downloadable PDF format for easy downloading and printing.
- High-quality illustrations and supporting diagrams aid in quick understanding.
- Point-wise summary of key concepts in a chapter to ensure that you cover all topics.
- Textbook revise are available in PDF format for easy download and printing.
- Concepts are explained in easy language accompanied with high-quality graphics.