What two numbers multiply to -840 and add up to 277?

Here we answer the question: "What two numbers multiply to -840 and add up to 277?"

The answer to your question is:

-3 and 280

Below we illustrate and prove that -3 and 280 multiply to -840 and add up to 277:

-3 × 280 = -840
-3 + 280 = 277

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

x² + 277x - 840 = 0

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

(x - 3 ) (x + 280)

To summarize, since -3 and 280 multiply to -840 and add up 277, you know that the following is true:

x² + 277x - 840 = (x - 3 ) (x + 280)

Multiply To One Number and Add Up To Another
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