What two numbers multiply to 687 and add up to 688?

Here we answer the question: "What two numbers multiply to 687 and add up to 688?"

The answer to your question is:

1 and 687

Below we illustrate and prove that 1 and 687 multiply to 687 and add up to 688:

1 × 687 = 687
1 + 687 = 688

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

x² + 688x + 687 = 0

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

(x + 1 ) (x + 687)

To summarize, since 1 and 687 multiply to 687 and add up 688, you know that the following is true:

x² + 688x + 687 = (x + 1 ) (x + 687)

Multiply To One Number and Add Up To Another
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