What two numbers multiply to -77 and add up to -4?




Here we answer the question: "What two numbers multiply to -77 and add up to -4?"

The answer to your question is:

-11 and 7


Below we illustrate and prove that -11 and 7 multiply to -77 and add up to -4:

-11 × 7 = -77
-11 + 7 = -4

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

x2 - 4x - 77 = 0

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

(x - 11 ) (x + 7)

To summarize, since -11 and 7 multiply to -77 and add up -4, you know that the following is true:

x2 - 4x - 77 = (x - 11 ) (x + 7)


Multiply To One Number and Add Up To Another
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