Class 10
Solutions of Sample Papers for Class 10 Boards

Question 2 - CBSE Class 10 Sample Paper for 2018 Boards - Solutions of Sample Papers for Class 10 Boards

Last updated at Dec. 16, 2024 by

Find the value(s) of k, if the quadratic equation 3x 2 − k√3 x + 4 = 0 has equal roots.

This is a question of CBSE Sample Paper - Class 10 - 2017/18.

You can download the question paper here  https://www.teachoo.com/cbse/sample-papers/

Find value of k, if quadratic equation 3x2 − k root3 x + 4 = 0 has

Question 2 - CBSE Class 10 Sample Paper for 2018 Boards - Part 2

Share on WhatsApp

Transcript

Question 2 Find the value(s) of k, if the quadratic equation 3x2 k 3 x + 4 = 0 has equal roots. 3x2 k 3 x + 4 = 0 Comparing equation with ax2 + bx + c = 0 a = 3, b = k 3 , c = 4 Since the equation has 2 equal roots, D = 0 b2 4ac = 0 Putting values (" k" 3)^2 4 3 4=0 3k2 48 = 0 3k2 = 48 k2 = 48/3 k2 = 16 k = 16 k = (4 4) k = 4 k = 4

Davneet Singh's photo - Co-founder, Teachoo

Made by

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