factorise : ab^2-(a-c)-b-c
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Answered by
31
ab^2-a+c-b-c
=ab^2-a-b
=a(b^2-1)-b
=a(b+1)(b-1)-b
=ab^2-a-b
=a(b^2-1)-b
=a(b+1)(b-1)-b
Answered by
9
ab^2-(a-c)-b-c
ab^2-a+c-b-c
=ab^2-a-b
=a(b^2-1)-b
=a(b+1)(b-1)-b
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