CBSE Class 10 Sample Paper for 2019 Boards

CBSE Class 10 Sample Paper for 2018 Boards →
Class 10
Solutions of Sample Papers for Class 10 Boards

Question 2 (Or 1st) - CBSE Class 10 Sample Paper for 2019 Boards - Solutions of Sample Papers for Class 10 Boards

Last updated at Dec. 16, 2024 by

Question 2 (OR 1 st question)

Find the value of k, for which one root of the quadratic equation kx 2 – 14x + 8 = 0 is 2

Find value of k, for which one root quadratic equation kx2 – 14x + 8=0

Question 2 (Or 1st) - CBSE Class 10 Sample Paper for 2019 Boards - Part 2

Share on WhatsApp

Transcript

Question 2 (OR 1st question) Find the value of k, for which one root of the quadratic equation kx2 – 14x + 8 = 0 is 2 Given that 2 is a root of the equation So, it must satisfy the equation Putting x = 2 in the equation kx2 – 14x + 8 = 0 k(2)2 – 14(2) + 8 = 0 k × 4 – 28 + 8 = 0 4k = 28 – 8 4k = 20 k = 20/4 k = 5 So, k = 5

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