What two numbers multiply to -385 and add up to 72?




Here we answer the question: "What two numbers multiply to -385 and add up to 72?"

The answer to your question is:

-5 and 77


Below we illustrate and prove that -5 and 77 multiply to -385 and add up to 72:

-5 × 77 = -385
-5 + 77 = 72

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

x2 + 72x - 385 = 0

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

(x - 5 ) (x + 77)

To summarize, since -5 and 77 multiply to -385 and add up 72, you know that the following is true:

x2 + 72x - 385 = (x - 5 ) (x + 77)


Multiply To One Number and Add Up To Another
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