Question

ax+by saqure+ bx-ay saqure

Answer 1

Hi ,

( ax + by )² + ( bx - ay )²

= ( ax )² + 2 ( ax )(by ) + ( by )² + ( bx )²

- 2 ( bx ) ( ay ) + ( ay )²

= a²x² + 2abxy + b² y² + b² x² - 2abxy

+ a² y²

= ( a² + b ² )x² + ( a² + b² ) y²

= ( a² + b² ) ( x² + y ² )

I hope this helps you.

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