Case Study Class 10 Maths Chapter Polynomials

Case Study Class 10 Maths Chapter Polynomials

Case Study Class 10 Maths Chapter Polynomials | Free Online Test

Case Study Class 10 Maths Chapter Polynomials

Students preparing for exams often search for case study math questions for class 10. These exercises help strengthen concepts in polynomials and their applications. Our online practice sets include interactive polynomial case study questions class 10 that focus on real-life problem solving. Practicing these questions regularly improves accuracy and speed. Additionally, students develop problem-solving skills while applying formulas like factorization and the remainder theorem in practical situations.

Importance of Math Case Study Class 10 Polynomials

Math case study questions class 10 on polynomials encourage analytical thinking and logical reasoning. For instance, questions based on finding zeros of polynomials or applying algebraic identities provide deeper understanding. Furthermore, solving these problems enhances critical thinking. Short exercises help reinforce key formulas and theorems. Therefore, students gain confidence and clarity in class 10 polynomials case study questions through consistent practice.

Benefits of Online Test Practice

Our polynomials case study class 10 online tests provide instant feedback and performance tracking. Students can quickly identify mistakes and improve their approach. The class 10 maths case study questions on polynomials cover multiple difficulty levels, from basic factorization to application-based sums. Consequently, learners strengthen concepts efficiently and are better prepared for board exams. Regular practice ensures mastery of fundamental polynomial concepts and boosts exam performance.

Case Study 1: Polynomials

Case Study 1: Understanding Polynomial Zeros

Rohit, a Class 10 student from a CBSE school, is exploring polynomials during his summer project. He is particularly fascinated by how polynomials behave graphically and algebraically. As a part of his research, he plotted several quadratic polynomials using a graphing software and observed that the points where the graphs intersect the x-axis are known as the zeros of the polynomials. He also noted that a polynomial of degree \( n \) can have at most \( n \) real zeros. Curious to test this idea further, he started analyzing the number and nature of zeros for different quadratic polynomials, including cases where no real zeros exist. He began documenting how the coefficients influence the number of real zeros and their signs. Help Rohit answer the following questions:

Key Concepts:

  • The zeros of a polynomial are the values of \( x \) for which the polynomial equals zero.
  • A polynomial of degree \( n \) can have at most \( n \) real zeros.
  • For a quadratic polynomial \( ax^2 + bx + c \), the discriminant \( D = b^2 – 4ac \) determines the nature of its zeros:
    • If \( D > 0 \): Two distinct real zeros
    • If \( D = 0 \): One real zero (repeated)
    • If \( D < 0 \): No real zeros

1. How many zeros does the polynomial \( f(x) = x^2 – 5x + 6 \) have?

  • A) 1
  • B) 2
  • C) 0
  • D) 3
Answer: B) 2
Solution: The given quadratic polynomial can be factored as: \[ f(x) = x^2 – 5x + 6 = (x – 2)(x – 3) \] So, the zeros are \( x = 2 \) and \( x = 3 \). Hence, the number of zeros is 2.

2. Which of the following polynomials has only one zero?

  • A) \( x^2 + 2x + 1 \)
  • B) \( x^2 – 2x + 2 \)
  • C) \( x^2 – 4 \)
  • D) \( x^2 – 3x + 2 \)
Answer: A) \( x^2 + 2x + 1 \)
Solution: \( x^2 + 2x + 1 = (x + 1)^2 \) has a repeated zero at \( x = -1 \), so it has only one real zero with multiplicity 2.

3. What are the zeros of the polynomial \( f(x) = x^2 + 4x + 3 \)?

  • A) \( -1, -3 \)
  • B) \( 1, 3 \)
  • C) \( -3, -1 \)
  • D) \( 3, 1 \)
Answer: C) \( -3, -1 \)
Solution: \[ f(x) = x^2 + 4x + 3 = (x + 1)(x + 3) \] So, the zeros are \( -1 \) and \( -3 \).

4. Which of the following polynomials has no real zeros?

  • A) \( x^2 – 4x + 4 \)
  • B) \( x^2 + 6 \)
  • C) \( x^2 – 1 \)
  • D) \( x^2 + 3x + 2 \)
Answer: B) \( x^2 + 6 \)
Solution: \( x^2 + 6 \) has no real roots because the discriminant \( D = 0^2 – 4 \cdot 1 \cdot 6 = -24 \) is negative.

5. Which condition must be true for a quadratic polynomial \( ax^2 + bx + c \) to have exactly one real zero?

  • A) \( b^2 – 4ac > 0 \)
  • B) \( b^2 – 4ac < 0 \)
  • C) \( b^2 – 4ac = 0 \)
  • D) \( a = 0 \)
Answer: C) \( b^2 – 4ac = 0 \)
Solution: A quadratic polynomial has exactly one real zero when the discriminant \( D = b^2 – 4ac = 0 \), which results in a repeated root.

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