Question

By using properties of determinants  show that,

Answer 1

Applying R₁ → R₁ + R₂ + R₃, we have:

Applying C₂ → C₂ − C₁, C₃ → C₃ − C₁, we have:

Applying R₂ → R₂ − R₁ and R₃ → R₃ − R₁, we have:

Hence, the given result is proved.