What two numbers multiply to -324 and add up to 77?

Here we answer the question: "What two numbers multiply to -324 and add up to 77?"

The answer to your question is:

-4 and 81

Below we illustrate and prove that -4 and 81 multiply to -324 and add up to 77:

-4 × 81 = -324
-4 + 81 = 77

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

x² + 77x - 324 = 0

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

(x - 4 ) (x + 81)

To summarize, since -4 and 81 multiply to -324 and add up 77, you know that the following is true:

x² + 77x - 324 = (x - 4 ) (x + 81)

Multiply To One Number and Add Up To Another
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