C-03-Q071mediumsingle_mcq(a−b)3=?(a-b)^3 = ?(a−b)3=? (Formula 7)aa3−3a2b+3ab2−b3a^3 - 3a^2 b + 3ab^2 - b^3a3−3a2b+3abব্যাখ্যাThe cube of a difference is (a−b)3=a3−3a2b+3ab2−b3(a-b)^3=a^3-3a^2b+3ab^2-b^3(a−b)3=a3−3a, with alternating signs.