Question

please give full solution of it it's very very urgent​

Answer 1

Factorise: 4 + 2ab - (a² + b²)

=> 4 - (a² + b² - 2ab)

=> 4 - (a² - b²)

=> 4 - (a + b) (a - b)

=> - (2 + a - b) (a - b - 2)

Hope its helpful for you.

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