Please solve these questions with solution.
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1.ab(a^2-b^2)+b^3(a-2b)
a^3b-ab^3+ab^3-2b^4
a^3b-0-2b^4
a^3b-2b^4
a^3b-ab^3+ab^3-2b^4
a^3b-0-2b^4
a^3b-2b^4
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whats the sign belong to
All you have to do multiply numeral with brackets and remember to pay attention to sign and then minus any number if possible then solve it until no more solution is possible
thanks for helping me
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