What two numbers multiply to -784 and add up to -42?




Here we answer the question: "What two numbers multiply to -784 and add up to -42?"

The answer to your question is:

-56 and 14


Below we illustrate and prove that -56 and 14 multiply to -784 and add up to -42:

-56 × 14 = -784
-56 + 14 = -42

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

x2 - 42x - 784 = 0

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

(x - 56 ) (x + 14)

To summarize, since -56 and 14 multiply to -784 and add up -42, you know that the following is true:

x2 - 42x - 784 = (x - 56 ) (x + 14)


Multiply To One Number and Add Up To Another
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