What two numbers multiply to 840 and add up to 841?

Here we answer the question: "What two numbers multiply to 840 and add up to 841?"

The answer to your question is:

1 and 840

Below we illustrate and prove that 1 and 840 multiply to 840 and add up to 841:

1 × 840 = 840
1 + 840 = 841

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

x² + 841x + 840 = 0

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

(x + 1 ) (x + 840)

To summarize, since 1 and 840 multiply to 840 and add up 841, you know that the following is true:

x² + 841x + 840 = (x + 1 ) (x + 840)

Multiply To One Number and Add Up To Another
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