Question

Two numbers add to 13 and multiply to 42. What are the two numbers?

Answer 1

The Answer is 6 and 7.

6 x 7 = 42

6 + (7) = 13

Are you asking because you are trying to figure out how to factor the following quadratic equation?

x² + 13x + 42 = 0

If so, the solution to factor the quadratic equation above is:

(X + 6 ) (X + 7)

To summarize, since 6 and 7 multiply to 42 and add up 13, you know that the following is true:

x² + 13x + 42 = (X + 6 ) (X + 7)