What two numbers multiply to -478 and add up to 477?

Here we answer the question: "What two numbers multiply to -478 and add up to 477?"

The answer to your question is:

-1 and 478

Below we illustrate and prove that -1 and 478 multiply to -478 and add up to 477:

-1 × 478 = -478
-1 + 478 = 477

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

x² + 477x - 478 = 0

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

(x - 1 ) (x + 478)

To summarize, since -1 and 478 multiply to -478 and add up 477, you know that the following is true:

x² + 477x - 478 = (x - 1 ) (x + 478)

Multiply To One Number and Add Up To Another
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