What two numbers multiply to -225 and add up to -40?




Here we answer the question: "What two numbers multiply to -225 and add up to -40?"

The answer to your question is:

-45 and 5


Below we illustrate and prove that -45 and 5 multiply to -225 and add up to -40:

-45 × 5 = -225
-45 + 5 = -40

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

x2 - 40x - 225 = 0

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

(x - 45 ) (x + 5)

To summarize, since -45 and 5 multiply to -225 and add up -40, you know that the following is true:

x2 - 40x - 225 = (x - 45 ) (x + 5)


Multiply To One Number and Add Up To Another
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