Q14 of 113 Page 65

If one zero of the quadratic polynomial kx2 + 3x + k is 2 then the value of k is

Given: 2 is the zero of the polynomial f(x) = kx2 + 3x + k


Put f(2) = 0


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


4k + 6 + k = 0



Hence, option D is correct.

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