C-03-Q029mediumsingle_mcq(a−b−c)2=?(a-b-c)^2 = ?(a−b−c)2=?aa2+b2+c2−2ab−2bc−2aca^2+b^2+c^2 - 2ab - 2bc - 2aca2+b2+c2ব্যাখ্যাWith both bbb and ccc subtracted, the products ababab and acacac are negative while bcbcbc (a product of two negatives) is positive: (a−b−c.