What two numbers multiply to 686 and add up to 687?

Here we answer the question: "What two numbers multiply to 686 and add up to 687?"

The answer to your question is:

1 and 686

Below we illustrate and prove that 1 and 686 multiply to 686 and add up to 687:

1 × 686 = 686
1 + 686 = 687

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

x² + 687x + 686 = 0

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

(x + 1 ) (x + 686)

To summarize, since 1 and 686 multiply to 686 and add up 687, you know that the following is true:

x² + 687x + 686 = (x + 1 ) (x + 686)

Multiply To One Number and Add Up To Another
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