What two numbers multiply to -510 and add up to 79?




Here we answer the question: "What two numbers multiply to -510 and add up to 79?"

The answer to your question is:

-6 and 85


Below we illustrate and prove that -6 and 85 multiply to -510 and add up to 79:

-6 × 85 = -510
-6 + 85 = 79

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

x2 + 79x - 510 = 0

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

(x - 6 ) (x + 85)

To summarize, since -6 and 85 multiply to -510 and add up 79, you know that the following is true:

x2 + 79x - 510 = (x - 6 ) (x + 85)


Multiply To One Number and Add Up To Another
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