What two numbers multiply to -390 and add up to -11?




Here we answer the question: "What two numbers multiply to -390 and add up to -11?"

The answer to your question is:

-26 and 15


Below we illustrate and prove that -26 and 15 multiply to -390 and add up to -11:

-26 × 15 = -390
-26 + 15 = -11

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

x2 - 11x - 390 = 0

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

(x - 26 ) (x + 15)

To summarize, since -26 and 15 multiply to -390 and add up -11, you know that the following is true:

x2 - 11x - 390 = (x - 26 ) (x + 15)


Multiply To One Number and Add Up To Another
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