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
Last updated at Oct. 1, 2019 by Teachoo
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
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
CBSE Class 10 Sample Paper for 2019 Boards
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CBSE Class 10 Sample Paper for 2019 Boards
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