If the system of equations px - 2y - pz = 0, 2x + py - pz = 0, -px + py + 2z = 0 has a non-trivial solution, then the su
In easy words, we verify 0 by full calculation: use standard identity, substitute, simplify step by step to reach 0.
Ref: NCERT Mathematics Class XII — Matrices and Determinants
