Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Algebra Linear Equation in 2 Variable
If 3x − 7y = 10 and xy = −1, find the value of 9x2 + 49y2.
1
71
2
58
3
63
4
More than one of the above
5
None of the above