What two numbers multiply to -651 and add up to -10?




Here we answer the question: "What two numbers multiply to -651 and add up to -10?"

The answer to your question is:

-31 and 21


Below we illustrate and prove that -31 and 21 multiply to -651 and add up to -10:

-31 × 21 = -651
-31 + 21 = -10

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

x2 - 10x - 651 = 0

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

(x - 31 ) (x + 21)

To summarize, since -31 and 21 multiply to -651 and add up -10, you know that the following is true:

x2 - 10x - 651 = (x - 31 ) (x + 21)


Multiply To One Number and Add Up To Another
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