What two numbers multiply to 279 and add up to 40?

Here we answer the question: "What two numbers multiply to 279 and add up to 40?"

The answer to your question is:

9 and 31

Below we illustrate and prove that 9 and 31 multiply to 279 and add up to 40:

9 × 31 = 279
9 + 31 = 40

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

x² + 40x + 279 = 0

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

(x + 9 ) (x + 31)

To summarize, since 9 and 31 multiply to 279 and add up 40, you know that the following is true:

x² + 40x + 279 = (x + 9 ) (x + 31)

Multiply To One Number and Add Up To Another
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