Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Quantitative Aptitude Algebra Quadratic Equation
If the roots of the quadratic equation 9x2 + 6kx + 4 = 0 are equal, then the value of k is :
1
-2 or 0
2
2 or 0
3
2 or -2
4
More than one of the above
5
None of the above