What two numbers multiply to -690 and add up to 343?

Here we answer the question: "What two numbers multiply to -690 and add up to 343?"

The answer to your question is:

-2 and 345

Below we illustrate and prove that -2 and 345 multiply to -690 and add up to 343:

-2 × 345 = -690
-2 + 345 = 343

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

x² + 343x - 690 = 0

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

(x - 2 ) (x + 345)

To summarize, since -2 and 345 multiply to -690 and add up 343, you know that the following is true:

x² + 343x - 690 = (x - 2 ) (x + 345)

Multiply To One Number and Add Up To Another
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