What two numbers multiply to -879 and add up to 878?

Here we answer the question: "What two numbers multiply to -879 and add up to 878?"

The answer to your question is:

-1 and 879

Below we illustrate and prove that -1 and 879 multiply to -879 and add up to 878:

-1 × 879 = -879
-1 + 879 = 878

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

x² + 878x - 879 = 0

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

(x - 1 ) (x + 879)

To summarize, since -1 and 879 multiply to -879 and add up 878, you know that the following is true:

x² + 878x - 879 = (x - 1 ) (x + 879)

Multiply To One Number and Add Up To Another
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