What two numbers multiply to -900 and add up to 25?




Here we answer the question: "What two numbers multiply to -900 and add up to 25?"

The answer to your question is:

-20 and 45


Below we illustrate and prove that -20 and 45 multiply to -900 and add up to 25:

-20 × 45 = -900
-20 + 45 = 25

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

x2 + 25x - 900 = 0

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

(x - 20 ) (x + 45)

To summarize, since -20 and 45 multiply to -900 and add up 25, you know that the following is true:

x2 + 25x - 900 = (x - 20 ) (x + 45)


Multiply To One Number and Add Up To Another
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