Question

2ab-a²-b²+c²
please solve this question ​

Answer 1

2ab – a² – b² + c²

= c² – a² + 2ab – b²

= c² – (a² – 2ab + b²)

= c² – (a – b)²

= {c – (a – b)} {c + (a – b)}

= (c – a + b)(c + a – b)

= (a – b + c)( – a + b + c)

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