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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

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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

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.