1. Class 10
  2. Solutions of Sample Papers for Class 10 Boards
  3. CBSE Class 10 Sample Paper for 2020 Boards - Maths Basic
Check sibling questions

Question 12 (OR 2nd question) - CBSE Class 10 Sample Paper for 2020 Boards - Maths Basic - Solutions of Sample Papers for Class 10 Boards

Last updated at Dec. 16, 2024 by Teachoo

If the quadratic equation x 2 – 2x + k = 0 has equal roots, then value of k is ______.

Transcript

Question 12 (OR 2nd question) If the quadratic equation x2 – 2x + k = 0 has equal roots, then value of k is ______. x2 – 2x + k = 0 Comparing equation with ax2 + bx + c = 0 a = 1, b = –2, c = k Since the equation has 2 equal roots, D = 0 b2 – 4ac = 0 Putting values (–2)2 – 4 × 1 × k = 0 4 – 4k = 0 4 = 4k 4k = 4 k = 4/4 k = 1
  1. Class 10
  2. Solutions of Sample Papers for Class 10 Boards

    3. CBSE Class 10 Sample Paper for 2020 Boards - Maths Basic

    CBSE Class 10 Sample Paper for 2019 Boards →
CBSE Class 10 Sample Paper for 2019 Boards →
Class 10
Solutions of Sample Papers for Class 10 Boards

About the Author

Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo