What two numbers multiply to 690 and add up to 691?

Here we answer the question: "What two numbers multiply to 690 and add up to 691?"

The answer to your question is:

1 and 690

Below we illustrate and prove that 1 and 690 multiply to 690 and add up to 691:

1 × 690 = 690
1 + 690 = 691

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

x² + 691x + 690 = 0

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

(x + 1 ) (x + 690)

To summarize, since 1 and 690 multiply to 690 and add up 691, you know that the following is true:

x² + 691x + 690 = (x + 1 ) (x + 690)

Multiply To One Number and Add Up To Another
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