What two numbers multiply to 428 and add up to 429?

Here we answer the question: "What two numbers multiply to 428 and add up to 429?"

The answer to your question is:

1 and 428

Below we illustrate and prove that 1 and 428 multiply to 428 and add up to 429:

1 × 428 = 428
1 + 428 = 429

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

x² + 429x + 428 = 0

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

(x + 1 ) (x + 428)

To summarize, since 1 and 428 multiply to 428 and add up 429, you know that the following is true:

x² + 429x + 428 = (x + 1 ) (x + 428)

Multiply To One Number and Add Up To Another
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