ax+b+by+a= a^2+b^2; x+y=2ab
Kindly refer the similar link for your query.
https://www.meritnation.com/ask-answer/question/bx-ay-2ab-0-ax-by-a2-b2find-value-of-a-b/pair-of-linear-equations-in-two-variables/7404181
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https://www.meritnation.com/ask-answer/question/bx-ay-2ab-0-ax-by-a2-b2find-value-of-a-b/pair-of-linear-equations-in-two-variables/7404181
Regards