C-03-Q208mediumsingle_mcqIf x3−y3=208x^3 - y^3 = 208x3−y3=208 and x−y=4x - y = 4x−y=4, xy=?xy = ?xy=?a121212b131313c161616d44ব্যাখ্যাUsing x3−y3=(x−y)3+3xy(x−y)x^3-y^3 = (x-y)^3 + 3xy(x-y)x3−y3=(x−y), substitute to get . Solving, , so .