What two numbers multiply to 231 and add up to 80?

Here we answer the question: "What two numbers multiply to 231 and add up to 80?"

The answer to your question is:

3 and 77

Below we illustrate and prove that 3 and 77 multiply to 231 and add up to 80:

3 × 77 = 231
3 + 77 = 80

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

x² + 80x + 231 = 0

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

(x + 3 ) (x + 77)

To summarize, since 3 and 77 multiply to 231 and add up 80, you know that the following is true:

x² + 80x + 231 = (x + 3 ) (x + 77)

Multiply To One Number and Add Up To Another
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