(ax +by)² + (bx-ax)²
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Step-by-step explanation:
(ax +by)² + (bx-ax)²
Using Formula,
(a + b)² = a² + b² + 2ab
(a - b)² = a² + b² - 2ab
= (a²x² + b²y² + 2axby) + (b²x² + a²x² - 2bxax)
= a²x² + b²y² + 2axby + b²x² + a²x² - 2bxax
= 2a²x² + b²y² + b²x² + 2axby - 2bxax
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