What two numbers multiply to 127 and add up to 128?

Here we answer the question: "What two numbers multiply to 127 and add up to 128?"

The answer to your question is:

1 and 127

Below we illustrate and prove that 1 and 127 multiply to 127 and add up to 128:

1 × 127 = 127
1 + 127 = 128

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

x² + 128x + 127 = 0

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

(x + 1 ) (x + 127)

To summarize, since 1 and 127 multiply to 127 and add up 128, you know that the following is true:

x² + 128x + 127 = (x + 1 ) (x + 127)

Multiply To One Number and Add Up To Another
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