What two numbers multiply to -638 and add up to 7?




Here we answer the question: "What two numbers multiply to -638 and add up to 7?"

The answer to your question is:

-22 and 29


Below we illustrate and prove that -22 and 29 multiply to -638 and add up to 7:

-22 × 29 = -638
-22 + 29 = 7

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

x2 + 7x - 638 = 0

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

(x - 22 ) (x + 29)

To summarize, since -22 and 29 multiply to -638 and add up 7, you know that the following is true:

x2 + 7x - 638 = (x - 22 ) (x + 29)


Multiply To One Number and Add Up To Another
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