Factorise by grouping method : ab - 2b + a 2 - 2a

Given, ab - 2b + a 2 - 2a = b(a - 2) + a(a - 2) = (a - 2)(b + a) = (a - 2)(a + b). Hence, ab - 2b + a 2 - 2a = (a - 2)(a + b).

Mathematics

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Given,

ab - 2b + a² - 2a

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

= (a - 2)(b + a)

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

Hence, ab - 2b + a² - 2a = (a - 2)(a + b).

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