This set of Class 8 Maths Chapter 9 Multiple Choice Questions & Answers (MCQs) focuses on “Algebraic Expressions – Monomials, Binomials and Polynomials”.
1. Identify the given expression: 3x + 5x.
a) Binomial
b) Monomial
c) Trinomial
d) Four-term polynomial
View Answer
Explanation: An algebraic expression is an expression which consists variables, constants along with algebraic operations like addition, subtraction, multiplication. An algebraic expression containing a single term is a monomial. Example: 9y, 5xy, etc. Now, from the given expression, 3x + 5x = 8x, which is a single term.
2. Identify the given expression: 4xy.
a) Monomial
b) Binomial
c) Trinomial
d) Four-term polynomial
View Answer
Explanation: Algebraic expression is an expression which consists variables, constants along with algebraic operations like addition, subtraction, multiplication. An algebraic expression containing a single term is a monomial. Example: 9y, 4xy, etc.
3. Identify the expression: 9xy + 4x.
a) Monomial
b) Trinomial
c) Four-term polynomial
d) Binomial
View Answer
Explanation: Algebraic expression is an expression which consists variables, constants along with algebraic operations like addition, subtraction, multiplication. An algebraic expression containing two terms is a binomial. Example: 9y + 7xy, 10x – 5y, etc.
4. Identify the expression: 9x – 6y + 2xy.
a) Monomial
b) Binomial
c) Trinomial
d) Four-term polynomial
View Answer
Explanation: Algebraic expression is an expression which consists variables, constants along with algebraic operations like addition, subtraction, multiplication. An algebraic expression containing three terms is a trinomial. Example: 9y + 7xy – 2x, 8x + 7y + 20z, etc.
5. Identify the term of the expression: 3x2 + 4xy.
a) 3x2, 4xy
b) 3x2
c) 4xy
d) 3, 4
View Answer
Explanation: A term is the part of the algebraic expression. The given expression has two terms.
6. Identify the all coefficients of the expression: x2 – 12xy + 2.
a) 1, -12, 2
b) -1, 12, -2
c) 1, 12
d) 1, -12
View Answer
Explanation: In a term of an algebraic expression, constant value before any variable term is called coefficient. The given expression can be written as 1x2 – 12xy + 2. So, 1 and -12 are coefficients of x2 and xy respectively.
7. Identify all the terms and coefficients of the expression: y3 – 10x2y + 14x.
a) Terms: y3, -10x2y, 14x
Coefficients: 1, -10, 14
b) Terms: y3, -10x2y, 14x
Coefficients: 1, 10, 14
c) Coefficients: y3, -10x2y, 14x
Terms: 1, -10, 14
d) Coefficients: y3, -10x2y, 14x
Terms: 1, 10, 14
View Answer
Explanation: A term is the part of the algebraic expression. In a term of an algebraic expression, constant value before any variable term is called coefficient.
8. Which of the following expressions have -1, 2 as the coefficients?
a) 12 – x
b) -x + 2y
c) x – 2y
d) xy
View Answer
Explanation: A term is the part of the algebraic expression. In a term of an algebraic expression, constant value before any variable term is called coefficient. Among the given expressions, -x + 2y has -1 and 2 as coefficients.
9. Which of the following expressions have -x, x2 as the terms?
a) x
b) x3 – x
c) x2
d) x2 – x
View Answer
Explanation: Algebraic expression is a combination of terms along with algebraic operations like addition, subtraction, multiplication. Example: 9y + 7xy – 2x is an expression with three terms, 8x + 7y is an expression with two term, etc.
10. Identify the coefficients of the following expression: x2-a + 2y.
a) 1, 2
b) x2-a
c) -2
d) -1, -2
View Answer
Explanation: Algebraic expression is a combination of terms along with algebraic operations like addition, subtraction, multiplication. In a term of an algebraic expression, constant value before any variable term is called coefficient. The given expression can be written as 1x2-a + 2y with 1 and 2 as coefficients of x2-a and y respectively.
Sanfoundry Global Education & Learning Series – Mathematics – Class 8.
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