# If a = xyp–1, b = xyq–1 and c = xyr–1, then let us show that aq–r br–p cp–q = 1.

Given, a = xyp–1, b = xyq–1 and c = xyr–1

Now, LHS = aq–r br–p cp–q

=

= )

=

=

= x0 × y0 = 1 × 1 = 1 = RHS

Therefore, LHS = RHS

Hence, proved.

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