railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Algebra Quadratic Equation
If x = \(\sqrt {10} \) + \(\sqrt {11} \) , y = \(\sqrt {10} \) - \(\sqrt {11} \) , then value of 7x2 - 50xy + 7y2 = ___________.
1
344
2
704
3
1360
4
386