What two numbers multiply to -285 and add up to 4?




Here we answer the question: "What two numbers multiply to -285 and add up to 4?"

The answer to your question is:

-15 and 19


Below we illustrate and prove that -15 and 19 multiply to -285 and add up to 4:

-15 × 19 = -285
-15 + 19 = 4

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

x2 + 4x - 285 = 0

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

(x - 15 ) (x + 19)

To summarize, since -15 and 19 multiply to -285 and add up 4, you know that the following is true:

x2 + 4x - 285 = (x - 15 ) (x + 19)


Multiply To One Number and Add Up To Another
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