Q5 of 113 Page 61

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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