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(4a-5b)^3 expand the following |
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Answer» = (4a)^3-(5b)^3-(3×4a×5b)(4a-5b) = 64a^3-125b^3-60ab(4a-5b) =64a^3-125b^3-240a^2+300ab^2 By using the identity, (x-y)^3 = x^3-y^3-3xy(x-y) |
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