What two numbers multiply to -30 and add up to 13?




Here we answer the question: "What two numbers multiply to -30 and add up to 13?"

The answer to your question is:

-2 and 15


Below we illustrate and prove that -2 and 15 multiply to -30 and add up to 13:

-2 × 15 = -30
-2 + 15 = 13

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

x2 + 13x - 30 = 0

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

(x - 2 ) (x + 15)

To summarize, since -2 and 15 multiply to -30 and add up 13, you know that the following is true:

x2 + 13x - 30 = (x - 2 ) (x + 15)


Multiply To One Number and Add Up To Another
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