What two numbers multiply to 690 and add up to -79?

Here we answer the question: "What two numbers multiply to 690 and add up to -79?"

The answer to your question is:

-69 and -10

Below we illustrate and prove that -69 and -10 multiply to 690 and add up to -79:

-69 × -10 = 690
-69 + -10 = -79

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

x² - 79x + 690 = 0

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

(x - 69 ) (x - 10)

To summarize, since -69 and -10 multiply to 690 and add up -79, you know that the following is true:

x² - 79x + 690 = (x - 69 ) (x - 10)

Multiply To One Number and Add Up To Another
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