find the value(s) of 'k' so that the quadratic polynomial kx^2 + x + k has equal zeros.
Here is the link for the answer to a similar query:
https://www.meritnation.com/ask-answer/question/the-values-of-k-for-which-the-quadratic-equation-kx2-5x-k-0/quadratic-equations/3493878
https://www.meritnation.com/ask-answer/question/the-values-of-k-for-which-the-quadratic-equation-kx2-5x-k-0/quadratic-equations/3493878