Here we answer the question: "What two numbers multiply to -630 and add up to 31?"
The answer to your question is:
-14 and 45
Below we illustrate and prove that -14 and 45 multiply to -630 and add up to 31:
-14 × 45 = -630
-14 + 45 = 31
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 + 31x - 630 = 0
If so, the solution to factor the quadratic equation above is:
(x - 14 ) (x + 45)
To summarize, since -14 and 45 multiply to -630 and add up 31, you know that the following is true:
x2 + 31x - 630 = (x - 14 ) (x + 45)
Multiply To One Number and Add Up To Another
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