What two numbers multiply to -801 and add up to 800?

Here we answer the question: "What two numbers multiply to -801 and add up to 800?"

The answer to your question is:

-1 and 801

Below we illustrate and prove that -1 and 801 multiply to -801 and add up to 800:

-1 × 801 = -801
-1 + 801 = 800

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

x² + 800x - 801 = 0

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

(x - 1 ) (x + 801)

To summarize, since -1 and 801 multiply to -801 and add up 800, you know that the following is true:

x² + 800x - 801 = (x - 1 ) (x + 801)

Multiply To One Number and Add Up To Another
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