Using suitable identity find the product (i) (a + b)² - 2ab - (a + b)(a - b)
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Step-by-step explanation:
( a + b )² - 2ab - ( a + b ) ( a - b )
= a² + b² + 2ab - 2ab - ( a² - b² )
= a² + b² - a² + b²
= b² + b²
= 2b² (Answer)
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