a^3 + ab (1-2a) - 2b^2
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a^3+ab(1-2a)-2b^2
a^3+ab-2a^2b-2b^2
a^3-2a^2b+ab-2b^2
a^2(a-2b)+b(a-2b)
(a-2b)(a^2+b)
Hope it helps you
a^3+ab-2a^2b-2b^2
a^3-2a^2b+ab-2b^2
a^2(a-2b)+b(a-2b)
(a-2b)(a^2+b)
Hope it helps you
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