RS Aggarwal - Mathematics

Book: RS Aggarwal - Mathematics

Chapter: 2. Polynomials

Subject: Maths - Class 10th

Q. No. 5 of Exercise 2C

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5

If one zeros of the quadratic polynomial kx2 + 3x + k is 2 then find the value of k.

It is given in the question that,

One of the zero of the polynomial kx2 + 3x + k is 2


It will satisfy the above polynomial


Now, we have


k (2)2 + 3 (2) + k = 0


4k + 6 + k = 0


5k + 6 = 0


5k = - 6


k = -6/5


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