What two numbers multiply to 685 and add up to 686?

Here we answer the question: "What two numbers multiply to 685 and add up to 686?"

The answer to your question is:

1 and 685

Below we illustrate and prove that 1 and 685 multiply to 685 and add up to 686:

1 × 685 = 685
1 + 685 = 686

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

x² + 686x + 685 = 0

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

(x + 1 ) (x + 685)

To summarize, since 1 and 685 multiply to 685 and add up 686, you know that the following is true:

x² + 686x + 685 = (x + 1 ) (x + 685)

Multiply To One Number and Add Up To Another
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