Q. 153.5( 4 Votes )

Using prope

Answer :


C1aC1



C1C1 + bC2 + cC3



Taking a2+b2+c2 common from C1 we get,



R2R2 - R1


R3R3 - R1







= (a2+b2+c2)(a+b+c)= R.H.S


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