The sum of two number is 25 and their difference is 13. Find their product. Pick.
A) 114	B) 104	C) 315	D) 350	E) 400
Let the numbers be x and y.   Then, x + y = 25 and x - y = 13.   4xy = (x + y)2 - (x- y)2=(25)2 - (13)2   = (625 - 169) = = 456 =&gt;114   114NSWER 114
<result>A</result>
The sum of two number is 25 and their difference is 13. Find their product.