Question

Factorise: a - b - a² + b² .

Answer 1

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Answer. a2 - b2 - a - b = [(a - b)(a + b)] - (a + b) = (a + b)(a - b - 1). Therefore, factors of a2 - b2 - a - b are (a + b)(a - b - 1).

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Answer 2

Answer:

a-b-a2=b2

=> [(a-b)(a+b)] - (a+b)

=> (a+b)(a-b-1)  {answer}

Step-by-step explanation:

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