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:

-21 and 31


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

-21 × 31 = -651
-21 + 31 = 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 - 21 ) (x + 31)

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

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


Multiply To One Number and Add Up To Another
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