If a=xyp-1,b=xyq-1 and c=xyr-1, prove that aq-rbr-pcp-q=1.

1.	If a=xyp-1,b=xyq-1 and c=xyr-1, prove that aq-rbr-pcp-q=1.
Answer» If $a = x y^{p - 1}, b = x y^{q - 1} and c = x y^{r - 1}$ , prove that $a^{q - r} b^{r - p} c^{p - q} = 1$ .

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