What two numbers multiply to -870 and add up to 43?




Here we answer the question: "What two numbers multiply to -870 and add up to 43?"

The answer to your question is:

-15 and 58


Below we illustrate and prove that -15 and 58 multiply to -870 and add up to 43:

-15 × 58 = -870
-15 + 58 = 43

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

x2 + 43x - 870 = 0

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

(x - 15 ) (x + 58)

To summarize, since -15 and 58 multiply to -870 and add up 43, you know that the following is true:

x2 + 43x - 870 = (x - 15 ) (x + 58)


Multiply To One Number and Add Up To Another
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