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Question 1 (Choice 2) - CBSE Class 10 Sample Paper for 2022 Boards - Maths Basic [Term 2] - Solutions of Sample Papers for Class 10 Boards

Last updated at Dec. 14, 2024 by Teachoo

Find the values of k for which the quadratic equation 3x 2 =  kx + 3 = 0 has real and equal roots.

This question is similar to Ex 4.4, 2 (i) Chapter 4 Class 10 - Quadratic Equations

Transcript

Question 1 โ€“ Choice 2 Find the values of k for which the quadratic equation 3๐‘ฅ2 + ๐‘˜๐‘ฅ + 3 = 0 has real and equal roots. Given 3๐‘ฅ2 + ๐‘˜๐‘ฅ + 3 = 0 Comparing equation with ax2 + bx + c = 0 Here, a = 3, b = ๐‘˜, c = 3 Since the equation has 2 equal roots, D = 0 b2 โ€“ 4ac = 0 Putting values ๐‘˜^2โˆ’4 ร— 3 ร— 3=0 ๐‘˜^2โˆ’36=0 ๐‘˜^2=36 ๐‘˜ = ยฑโˆš36 ๐’Œ = ยฑ๐Ÿ” Hence, ๐’Œ = ๐Ÿ” or ๐’Œ = โˆ’๐Ÿ”
  1. Class 10
  2. Solutions of Sample Papers for Class 10 Boards

    3. CBSE Class 10 Sample Paper for 2022 Boards - Maths Basic [Term 2]

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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