Let R1→ aR1 , R2→ bR2, R3→ cR3C1→ C1 – C3 and C2→ C2– C3R3→ R3 – ( R1 + R2))C1→ C1 + C3 , C2→ C2 + C3= 2ab (a+b+c)2 {(b+c)(c+a) – ab}= 2abc (a+b+c)3=RHS

Q. 295.0( 2 Votes )

Using the propert

Class 12th Mathematics - Board Papers Delhi-2010

Answer :

Let

R₁→ aR₁ , R₂→ bR₂, R₃→ cR₃

C₁→ C₁ – C₃ and C₂→ C₂– C₃

R₃→ R₃ – ( R₁ + R₂))

C₁→ C₁ + C₃ , C₂→ C₂ + C₃

= 2ab (a+b+c)² {(b+c)(c+a) – ab}

= 2abc (a+b+c)³

=RHS

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