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Question
Factors of a2−b+ab−a are
Factors of a2−b+ab−a are
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Solution
The correct option is B (a + b)(a - 1)
a2−b+ab−a=a2−a−b+ab
= a(a-1)+b(-1+a)
= a(a-1)+b(a-1)
= (a+b) (a-1)
(a + b)(a - 1)
a2−b+ab−a=a2−a−b+ab
= a(a-1)+b(-1+a)
= a(a-1)+b(a-1)
= (a+b) (a-1)
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