What two numbers multiply to -945 and add up to 128?




Here we answer the question: "What two numbers multiply to -945 and add up to 128?"

The answer to your question is:

-7 and 135


Below we illustrate and prove that -7 and 135 multiply to -945 and add up to 128:

-7 × 135 = -945
-7 + 135 = 128

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

x2 + 128x - 945 = 0

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

(x - 7 ) (x + 135)

To summarize, since -7 and 135 multiply to -945 and add up 128, you know that the following is true:

x2 + 128x - 945 = (x - 7 ) (x + 135)


Multiply To One Number and Add Up To Another
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