What two numbers multiply to -285 and add up to -4?

Here we answer the question: "What two numbers multiply to -285 and add up to -4?"

The answer to your question is:

-19 and 15

Below we illustrate and prove that -19 and 15 multiply to -285 and add up to -4:

-19 × 15 = -285
-19 + 15 = -4

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

x² - 4x - 285 = 0

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

(x - 19 ) (x + 15)

To summarize, since -19 and 15 multiply to -285 and add up -4, you know that the following is true:

x² - 4x - 285 = (x - 19 ) (x + 15)

Multiply To One Number and Add Up To Another
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