Class 9 Maths MCQs -Chapter 2 Polynomial with Solutions
Class 9 Maths MCQs Polynomial with Solutions are created for the purpose of helping the class 10 students for the preparation of Term 1 CBSE Board exam 2021. The practice of these MCQs are required to every students because the pattern of the CBSE Board exam has changed and all the questions in the question paper are of MCQs types . All the questions of chapter 2 Polynomial are selected here as per the CBSE sample paper of maths published by CBSE.The solutions of these MCQs of the chapter Polynomial are created here as per the CBSE norms and explained here in easiest way so every students can understand the solutions.
MCQ’s on Real Numbers for Term 1 CBSE with Solutions
MCQ’s on Class 10 Maths Co-ordinate Geometry for Term 1 CBSE
Class 10 Maths MCQs with solutions -Chapter 6 Triangles
Class 10 Maths MCQโs on Trigonometry for Term 1 CBSE with Solutions
Class 10 MCQ’s questions with solutions-Polynomial
Class 9 Maths MCQs -Chapter 2 Polynomial with Solutions
Click for online shopping
Future Study Point.Deal: Cloths, Laptops, Computers, Mobiles, Shoes etc
Q1. The value of the polynomial P(x) = 5xยณ – 3xยฒ + 7x – 10,when x = -1 is:
(a) 7ย ย ย (b) 17ย ย ย ย (c) -18ย ย ย (d) -25
Ans. The given polynomial P(x) =5xยณ – 3xยฒ + 7x – 10
The value of the polynomial when x =-1
P(-1) = 5(-1)ยณ -3(-1)ยฒ +7(-1) -10 = -5 -3 -7 -10 =-25
Q2.One of theย zeroes of the polynomial P(x) = xยฒ – 1 are :
(a) -1ย ย ย ย (b) -2ย ย ย ย (c) 0ย ย ย (d) -3
Ans. (a) -1
The given polynomial is P(x) = xยฒ – 1
P(x) = xยฒ – 1 = 0
(x +1)(x -1) = 0
x = -1 and x = 1
Q3.The product of ( x + 1/x)(x -1/x)(xยฒ + 1/xยฒ) is :
(a) (x – 1/x)ยณย ย ย ย (b) xย + 1/xยณย ย ย ย (c) ย x^{4}-1/ x^{4ย ย }(d) ย x^{4}+ 1/ x^{4}
Ans. The given expression is
(x + 1/x)(x -1/x)(xยฒ + 1/xยฒ)
= (xยฒ – 1/xยฒ)(xยฒ+1/xยฒ) [i.e aยฒ -bยฒ = (a +b)(a – b)]
= ( x^{4}-1/ x^{4}) [ i.e aยฒ – bยฒ = (a + b)( a – b)]
Q4.Ifย x/yย + y/x = -1 (x,y โ 0), then the value of xยณ – yยณย is
(a) 1ย (b) (x -y)(xยฒ – yยฒ +1)ย ย ย (c) 0ย ย (d) -1/2
Ans.(c) 0
The given equation is
x/y + y/x = -1
(xยฒ + yยฒ)/xy = -1
xยฒ + yยฒ = -xy….(i)
Cubing both sides
The value of xยณ – yยณ = (x -y)(xยฒ +yยฒ + xy)
Putting the value from equation (i)
xยณ – yยณ = ( x – y)( -xy +xy) =0
Q5. The value of 625ยฒ – 575ยฒย ย is
(a) 50000ย ย ย ย ย (b)30000ย ย ย ย ย ย (c)60000ย ย ย ย ย ย (d) 40000
Ans.
625ยฒ – 575ยฒ = (625 + 575)(625 – 575) = 1200 ร 50 =60000
Q6. If xยฒ + kx + 6 = ( x +1)( x – 3),then value of k is
(a) 1ย ย ย ย ย ย (b) -1ย ย ย ย ย (c) 2ย ย ย ย ย (d) -1
Ans. The given equation is
xยฒ + kx + 6 = (x +2)( x +3)
xยฒ + kx + 6 = xยฒ + (2+3)x + 2ร3 = xยฒ + 5x +6
On comparing LHS and RHS
k = 5
Q7. The coefficient of xยณ in ( 2xยฒ + 2x)(5xยณ – 9xยฒ) is:
(a) -15ย ย ย ย (b) -18ย ย ย ย (c) 27ย ย ย ย (d) -28
Ans. (2xยฒ + 2x)(5xยณ -9xยฒ) for getting the coefficient of xยณ,multiplying 2x and -9xยฒ i.e 2xร-9xยฒ = -18xยณ
Hence the coefficient of xยณ is -18
Q8. Find the remainder when the polynomial 3xยณ – 8xยฒ + 17x + 4 is divided by x:
(a) 2ย ย ย ย (b) -4ย ย ย ย ย (c) 4ย ย ย ย (d) 0
Ans.(c) 4
The given polynomial is 3xยณ – 8xยฒ + 17x + 4
Putting the value x = 0
3(0)ยณ – 8(0)ยฒ +17(0) + 4 = 4
Q9.If 2x + y + 3z = 0, then the value ofย 8xยณ + yยณ + 27zยณ is :
(a) 18xyzย ย ย ย (b) -18xyzย ย ย ย (c) 36xyzย ย ย ย (d) -36xyz
Ans.(a) 18xyz
The given equation is
2x + y + 3x = 0
Applying the identity
aยณ + bยณ +cยณ – 3abc = (a + b +c)(aยฒ + bยฒ + cยฒ – ab – bc -ac)
(2x)ยณ + yยณ + (3z)ยณ – 3ร2xร3z = ( 2x + y +3z)(4xยฒ + yยฒ + 9zยฒ -2xy – 3yz – 6xz)
Putting the value of 2x + y +3z = 0
8xยณ + yยณ + 27zยณ = 0
Q10. If area of the rectangle is 4xยฒ + 4x – 3,then its possible diensions are :
(a) 2x +1, 2x +3ย ย (b) 3x -1, 2x +1ย ย (c) 2x -3,2x +5ย ย ย (d) 2x +3,2x -1
Ans.
4xยฒ + 4x – 3
=4xยฒ + 6x – 2x – 3
=2x( 2x + 3) -1(2x + 3)
=(2x + 3)(2x – 1)
You can compensate us by donating any amount of money for our survival
Our Paytm NO 9891436286
NCERT Solutions of class 9 scienceย
CBSE Class 9-Question paper of science 2020 with solutions
CBSE Class 9-Sample paper of science
CBSE Class 9-Unsolved question paper of science 2019
NCERT Solutions of class 10 maths
CBSE Class 10-Question paper of maths 2021 with solutions
CBSE Class 10-Half yearly question paper of maths 2020 with solutions
CBSE Class 10 -Question paper of maths 2020 with solutions
CBSE Class 10-Question paper of maths 2019 with solutions
NCERT solutions of class 10 science
Solutions of class 10 last years Science question papers
CBSE Class 10 – Question paper of science 2020 with solutions
CBSE class 10 -Latest sample paper of science
NCERT solutions of class 11 maths
Chapter 1-Sets | Chapter 9-Sequences and Series |
Chapter 2- Relations and functions | Chapter 10- Straight Lines |
Chapter 3- Trigonometry | Chapter 11-Conic Sections |
Chapter 4-Principle of mathematical induction | Chapter 12-Introduction to three Dimensional Geometry |
Chapter 5-Complex numbers | Chapter 13- Limits and Derivatives |
Chapter 6- Linear Inequalities | Chapter 14-Mathematical Reasoning |
Chapter 7- Permutations and Combinations | Chapter 15- Statistics |
Chapter 8- Binomial Theorem | ย Chapter 16- Probability |
CBSE Class 11-Question paper of maths 2015
CBSE Class 11 – Second unit test of maths 2021 with solutions
NCERT solutions of class 12 maths
Chapter 1-Relations and Functions | Chapter 9-Differential Equations |
Chapter 2-Inverse Trigonometric Functions | Chapter 10-Vector Algebra |
Chapter 3-Matrices | Chapter 11 – Three Dimensional Geometry |
Chapter 4-Determinants | Chapter 12-Linear Programming |
Chapter 5- Continuity and Differentiability | Chapter 13-Probability |
Chapter 6- Application of Derivation | CBSE Class 12- Question paper of maths 2021 with solutions |
Chapter 7- Integrals | |
Chapter 8-Application of Integrals |
50 important science questions for cbse 10 class
Chemical properties of acid and base
Chemistry viva voce questions & answers
Chemistry practical based questions
Solutions of previous years science & maths question papers
Solutions of class 10 Science question paper 2019 CBSE
Solutions of class 10 CBSE maths question paper 2020
CBSE Class 10 science question paper 2020 SET -3 solutions
Download e-book of Science NCERT 634 questions with solutions for Polytechnic and NDA entrance exams