Question

(a - b)(a + b + ab) - (a + b)(a + b - ab)​

Answer 1

Answer:

The answer is 0 .

Step-by-step explanation:

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Answer 2

Answer:

- 2(b² - a²b + ab)

Step-by-step explanation:

(a - b)(a + b + ab) - (a + b)(a + b - ab)​

=> a² + ab + a²b - ab - b² - ab² - [a² + ab - a²b + ab+ b² - ab²]

=> a² + ab + a²b - ab - b² - ab² - a² - ab + a²b - ab - b² + ab²

=> (a² - a²) +(- b² - b²) + (ab - ab) + (a²b + a²b) +(- ab -ab) +(- ab² + ab²)

=>0 + (-2b² ) + 0 + (2a²b) + (-2ab) + 0

=> -2b² + 2a²b - 2ab

=> - 2(b² - a²b + ab)

or => - 2b( b - a² + a)