Question

Factorise the following expressions.
(a―b)^2+(a―b)​

Answer 1

(a-b)²+ (a-b)

(a-b) [(a-b) +1]

(a-b) [a-b+1]

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Answer 2

Answer:

(a-b)^2 + ( a-b)

= a^2 -2ab +b^2 + a-b

= a^2 -2ab -a +b^2 -b

= a(a-2b - 1)+ b (b-1)

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