Quantitative Aptitude Algebra Quadratic Equation

Find the value of k for which the quadratic equation (3k + 1)x2 + 2(k + 1)x + 1 = 0 has equal roots.

1

k = 0 and k = 1

2

k = 0 and k = -1

 
3

k = 6 and k = 1

 
4

k = 10 and k = 1

 

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