What two numbers multiply to -648 and add up to -42?




Here we answer the question: "What two numbers multiply to -648 and add up to -42?"

The answer to your question is:

-54 and 12


Below we illustrate and prove that -54 and 12 multiply to -648 and add up to -42:

-54 × 12 = -648
-54 + 12 = -42

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

x2 - 42x - 648 = 0

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

(x - 54 ) (x + 12)

To summarize, since -54 and 12 multiply to -648 and add up -42, you know that the following is true:

x2 - 42x - 648 = (x - 54 ) (x + 12)


Multiply To One Number and Add Up To Another
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