Multiple choice The sum of two numbers is 25 and their difference is 13. Find their product. 104 114 315 325 None of these Reveal answer Fill a bubble to check yourself B Correct answer Explanation Let the numbers be x and y. Then, x + y = 25 and x - y = 13. 4xy = (x + y)2 - (x- y)2 4xy = (25)2 - (13)2 4xy = (625 - 169) = 456 xy = 114