What two numbers multiply to -408 and add up to 133?

Here we answer the question: "What two numbers multiply to -408 and add up to 133?"

The answer to your question is:

-3 and 136

Below we illustrate and prove that -3 and 136 multiply to -408 and add up to 133:

-3 × 136 = -408
-3 + 136 = 133

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

x² + 133x - 408 = 0

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

(x - 3 ) (x + 136)

To summarize, since -3 and 136 multiply to -408 and add up 133, you know that the following is true:

x² + 133x - 408 = (x - 3 ) (x + 136)

Multiply To One Number and Add Up To Another
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