Assertion Reasoning - Worksheet 1

Transcript

Chapter 2 Class 9 Polynomials - Assertion and Reasoning Worksheet 1 by teachoo Chapter: Chapter 2 Class 9 Maths – Polynomials Name: _____________________________ School: _____________________________ Roll Number: _____________________________ Instructions: For each question, two statements are given: Assertion (A) and Reason (R). Choose the correct option. (a) Both A and R are true, and R is the correct explanation of A. (b) Both A and R are true, but R is not the correct explanation of A. (c) A is true, but R is false. (d) A is false, but R is true. 1. Assertion (A): The expression 1/x+2 is not a polynomial. Reason (R): A polynomial is an expression where the exponents of the variable must be non-negative integers. 2. Assertion (A): The degree of the polynomial p(x)=7 is 0 . Reason (R): The degree of a non-zero constant polynomial is always zero. 3. Assertion (A): If (x-2) is a factor of p(x)=x^2+kx+4, then k=-4. Reason (R): According to the Factor Theorem, if (x-a) is a factor of p(x), then p(a)=0. 4. Assertion (A): A quadratic polynomial can have at most two zeroes. Reason (R): The graph of a quadratic polynomial is a parabola which can intersect the x-axis at a maximum of two distinct points. 5. Assertion (A): The expression for the area of a rectangle with sides (x+5) and (x-3) is a quadratic polynomial. Reason (R): A polynomial of degree 2 is called a quadratic polynomial. Important links Answer of this worksheet -https://www.teachoo.com/25600/5366/Assertion-Reasoning---Worksheet-1/category/Teachoo-Questions---Assertion-Reasoning/ Full Chapter with Explanation, Activity, Worksheets and more – https://www.teachoo.com/subjects/cbse-maths/class-9th/ch2-9th-polynomials/ Science Class 9 – https://www.teachoo.com/subjects/science/class-9/ Maths Class 9- https://www.teachoo.com/subjects/cbse-maths/class-9th/ For more worksheets, ad-free videos and Sample Papers – subscribe to Teachoo Black here - https://www.teachoo.com/black/   Answer Key to Assertion & Reasoning - Worksheet 1 a) Both are true and R is the correct explanation of A. a) Both are true and R is the correct explanation of A. a) Both are true and R is the correct explanation of A. a) Both are true and R is the correct explanation of A. b) Both A and R are true, but R is not the correct explanation of A. R is a definition, not a proof for A.