Mark the tick against the correct answer in the following:


To find: Value of


We have,


Applying +




(a+b+c)


Expanding along R1


(a+b+c)[2{(c) (c) – (b) (a)} -1{(c+a)(c)-(a+b)(a)} + 1{(c+a)(b)-(a+b)(c)}]


(a+b+c)[2{c2 – ab} -1{c2+ac-a2-ab} + 1{bc+ba-ac-bc}]


(a+b+c)[2c2 – 2ab - c2 – ac + a2 + ab + ba - ac]


(a+b+c)[c2 + a2 - 2ac]


(a+b+c)(c – a)2

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