factorise: 2a^3-3a^2b+5ab^2-ab
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QUESTION:
FACTORISE: 2a^3-3a^2b+5ab^2-ab
SOLUTION:
= a^2(2a-3b) + ab(5b-1)
= (a^2+ab) [2a-3b+5b-1]
= (a^2+ab) [2a+2b-1]
= (a^2+ab) (2a+2b-1)
ANSWER:
= (a^2+ab) (2a+2b-1)
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