What two numbers multiply to -28 and add up to 3?

Here we answer the question: "What two numbers multiply to -28 and add up to 3?"

The answer to your question is:

-4 and 7

Below we illustrate and prove that -4 and 7 multiply to -28 and add up to 3:

-4 × 7 = -28
-4 + 7 = 3

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

x² + 3x - 28 = 0

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

(x - 4 ) (x + 7)

To summarize, since -4 and 7 multiply to -28 and add up 3, you know that the following is true:

x² + 3x - 28 = (x - 4 ) (x + 7)

Multiply To One Number and Add Up To Another
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