state gov Maharashtra Talathi (तलाठी भरती) Mock Test 2023 Quantitative Aptitude Algebra Quadratic Equation
What will be the value of b, for which the least value of quadratic function f(x) = x2 – 4bx + 9 is -27?
1
6 or -6
2
3 or -3
3
4.5 or -4.5
4
4 or -4