If a=x^(m+n)\ y^l,\ b=x^(n+l)\ y^m and c...

If `a=x^(m+n)\ y^l,\ b=x^(n+l)\ y^m` and `c=x^(l+m)y^n ,` prove that `a^(m-n)\ b^(n-l)\ c^(l-m\ )=1`

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