What two numbers multiply to -715 and add up to 42?

Here we answer the question: "What two numbers multiply to -715 and add up to 42?"

The answer to your question is:

-13 and 55

Below we illustrate and prove that -13 and 55 multiply to -715 and add up to 42:

-13 × 55 = -715
-13 + 55 = 42

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

x² + 42x - 715 = 0

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

(x - 13 ) (x + 55)

To summarize, since -13 and 55 multiply to -715 and add up 42, you know that the following is true:

x² + 42x - 715 = (x - 13 ) (x + 55)

Multiply To One Number and Add Up To Another
Did you find the information on this page useful? Here you can solve a similar problem.