What two numbers multiply to -855 and add up to -42?

Here we answer the question: "What two numbers multiply to -855 and add up to -42?"

The answer to your question is:

-57 and 15

Below we illustrate and prove that -57 and 15 multiply to -855 and add up to -42:

-57 × 15 = -855
-57 + 15 = -42

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

x² - 42x - 855 = 0

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

(x - 57 ) (x + 15)

To summarize, since -57 and 15 multiply to -855 and add up -42, you know that the following is true:

x² - 42x - 855 = (x - 57 ) (x + 15)

Multiply To One Number and Add Up To Another
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