Given sum and product, find the two integers.
I gave my grandson the following puzzle: The sum of two integers is 20. Their product is 91. What are the two integers. He figured it out by: 1 * 19 = 19. Too small. 3 * 17 = 51. Too small. 5 * 15 = 75. Too small. 7 * 13 = 91. Just right. I showed him the following way to solve it, that would work... Sign in to see full entry.