Question

please this question ​

Answer 1

Answer:

its long answer you should give atleast 25 point to solve

Answer 2

Answer:

$a = {xy}^{p - 1} \\ b = {xy}^{q - 1} \\ c = {xy}^{r - 1} \\ = {a}^{q - r} {b}^{r - p} {c}^{p - q} \\ = ( {xy}^{p - 1})^{q - r} ({xy}^{q - 1} )({xy}^{r - 1} ) ^{p - q} \\ = {x}^{q - r + r - p + p - q} {y}^{qp + r - q - pr + qr + p - qp - r + pr + q - p - qr} \\ = {x}^{0} {y}^{0} = 1$