1.

R i i 5l byl r—1 o;(gn?a & P P49 =a=xyP L, b=xy" R c=xy" T, (क्‍्थेंडि (, a9 b P ¢& 1 2(T B {8

Answer»

Put the values of a , b and cthen(xy^p-1)^q-r (xy^q-1)^r-p(xy^r-1)^p-qafter solving



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