What two numbers multiply to -688 and add up to 342?

Here we answer the question: "What two numbers multiply to -688 and add up to 342?"

The answer to your question is:

-2 and 344

Below we illustrate and prove that -2 and 344 multiply to -688 and add up to 342:

-2 × 344 = -688
-2 + 344 = 342

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

x² + 342x - 688 = 0

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

(x - 2 ) (x + 344)

To summarize, since -2 and 344 multiply to -688 and add up 342, you know that the following is true:

x² + 342x - 688 = (x - 2 ) (x + 344)

Multiply To One Number and Add Up To Another
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