(a^2 + b^2) - (a-b)^2
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Answer:
2ab
Step-by-step explanation:
(a² + b²) - (a-b)²
(a² + b²) - (a²-2ab+b²)
(a² + b²) - (a²+b²-2ab)
a² + b² - a² - b² +2ab
a² and b² and got cancelled
= 2ab
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