plzzzz ans.....factorise......Thnk u
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(a + b)² - a² + b²
= a² + b² + 2ab - a² + b²
= b² + 2ab + b²
= 2b² + 2ab
= 2b (b + a)
= 2b(a + b)
= a² + b² + 2ab - a² + b²
= b² + 2ab + b²
= 2b² + 2ab
= 2b (b + a)
= 2b(a + b)
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