Multinomial
Definition of Multinomial
A Multinomial is an algebraic expression having more than one term. For example: 9x^{3} + 2x^{2} + 5
More About Multinomial
 A multinomial is also called a polynomial.
 The operations involved in forming a multinomial are addition, subtraction, multiplication, and division (+, , �, �).
 Sum or product of two or more multinomials is also a multinomial, but their subtraction or division may not result in a multinomial.
Examples of Multinomial

�5x + 9, 6y^{2} + 2y � 5 etc are the examples of multinomial.
Video Examples: Multinomial Coefficient problem
Solved Example on Multinomial
Ques: Which of the following is a multinomial?
Choices:
A. 6xyB.
C. 3y5 + 3y6  3
D.
Correct Answer: C
Solution:

Step 1: A multinomial is a polynomial expression which is the sum of the terms.
Step 2: Here, 6xy, , and are the monomial expressions as they have only single terms in the expression.
Step 3: So, the expression 3y5 + 3y6 � 3 is a polynomial with the sum of the terms.
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