Question
Mathematics Question on Linear Equations
If the system of equations
2x + y - z = 5
2x -5y + λz = μ
x + 2y - 5z = 7
has infinitely many solutions, then (λ + μ)2 + (λ - μ)2 is equal to
A
904
B
912
C
916
D
920
Answer
916
Explanation
Solution
The correct answer is (C) : 916