What two numbers multiply to 308 and add up to -81?

Here we answer the question: "What two numbers multiply to 308 and add up to -81?"

The answer to your question is:

-77 and -4

Below we illustrate and prove that -77 and -4 multiply to 308 and add up to -81:

-77 × -4 = 308
-77 + -4 = -81

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

x² - 81x + 308 = 0

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

(x - 77 ) (x - 4)

To summarize, since -77 and -4 multiply to 308 and add up -81, you know that the following is true:

x² - 81x + 308 = (x - 77 ) (x - 4)

Multiply To One Number and Add Up To Another
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