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
Did you find the information on this page useful? Here you can solve a similar problem.