What two numbers multiply to 688 and add up to 689?

Here we answer the question: "What two numbers multiply to 688 and add up to 689?"

The answer to your question is:

1 and 688

Below we illustrate and prove that 1 and 688 multiply to 688 and add up to 689:

1 × 688 = 688
1 + 688 = 689

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

x² + 689x + 688 = 0

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

(x + 1 ) (x + 688)

To summarize, since 1 and 688 multiply to 688 and add up 689, you know that the following is true:

x² + 689x + 688 = (x + 1 ) (x + 688)

Multiply To One Number and Add Up To Another
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