What two numbers multiply to 392 and add up to -42?

Here we answer the question: "What two numbers multiply to 392 and add up to -42?"

The answer to your question is:

-28 and -14

Below we illustrate and prove that -28 and -14 multiply to 392 and add up to -42:

-28 × -14 = 392
-28 + -14 = -42

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

x² - 42x + 392 = 0

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

(x - 28 ) (x - 14)

To summarize, since -28 and -14 multiply to 392 and add up -42, you know that the following is true:

x² - 42x + 392 = (x - 28 ) (x - 14)

Multiply To One Number and Add Up To Another
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