What two numbers multiply to 45 and add up to -18?




Here we answer the question: "What two numbers multiply to 45 and add up to -18?"

The answer to your question is:

-15 and -3


Below we illustrate and prove that -15 and -3 multiply to 45 and add up to -18:

-15 × -3 = 45
-15 + -3 = -18

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

x2 - 18x + 45 = 0

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

(x - 15 ) (x - 3)

To summarize, since -15 and -3 multiply to 45 and add up -18, you know that the following is true:

x2 - 18x + 45 = (x - 15 ) (x - 3)


Multiply To One Number and Add Up To Another
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