What two numbers multiply to 390 and add up to -71?

Here we answer the question: "What two numbers multiply to 390 and add up to -71?"

The answer to your question is:

-65 and -6

Below we illustrate and prove that -65 and -6 multiply to 390 and add up to -71:

-65 × -6 = 390
-65 + -6 = -71

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

x² - 71x + 390 = 0

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

(x - 65 ) (x - 6)

To summarize, since -65 and -6 multiply to 390 and add up -71, you know that the following is true:

x² - 71x + 390 = (x - 65 ) (x - 6)

Multiply To One Number and Add Up To Another
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