Q19 of 256 Page 7

Prove the following identities:

=






= – xyz(x – y)(z – y)[z2 + y2 + zy – x2 – y2 – xy]


= – xyz(x – y)(z – y)[(z – x)(z + x0 + y(z – x)]


= – xyz(x – y)(z – y)(z – x)(x + y + z)


= R.H.S


Hence, proved.


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