What two numbers multiply to -15 and add up to -14?




Here we answer the question: "What two numbers multiply to -15 and add up to -14?"

The answer to your question is:

-15 and 1


Below we illustrate and prove that -15 and 1 multiply to -15 and add up to -14:

-15 × 1 = -15
-15 + 1 = -14

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

x2 - 14x - 15 = 0

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

(x - 15 ) (x + 1)

To summarize, since -15 and 1 multiply to -15 and add up -14, you know that the following is true:

x2 - 14x - 15 = (x - 15 ) (x + 1)


Multiply To One Number and Add Up To Another
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