What two numbers multiply to -388 and add up to 387?

Here we answer the question: "What two numbers multiply to -388 and add up to 387?"

The answer to your question is:

-1 and 388

Below we illustrate and prove that -1 and 388 multiply to -388 and add up to 387:

-1 × 388 = -388
-1 + 388 = 387

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

x² + 387x - 388 = 0

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

(x - 1 ) (x + 388)

To summarize, since -1 and 388 multiply to -388 and add up 387, you know that the following is true:

x² + 387x - 388 = (x - 1 ) (x + 388)

Multiply To One Number and Add Up To Another
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