defence exam CISF Head Constable Ministerial (HCM) & ASI Steno Mock Test Series Quantitative Aptitude Algebra Quadratic Equation
Solve the following equation:
x2 + x + 2 = 0
1
\(\frac{-1\pm \sqrt{-7}i}{2}\)
2
\(\frac{-1\pm \sqrt{7}}{2}\)
3
\(\frac{-1\pm \sqrt{7}i}{2}\)
4
\(\frac{-2\pm \sqrt{7}i}{2}\)