What two numbers multiply to -345 and add up to 8?




Here we answer the question: "What two numbers multiply to -345 and add up to 8?"

The answer to your question is:

-15 and 23


Below we illustrate and prove that -15 and 23 multiply to -345 and add up to 8:

-15 × 23 = -345
-15 + 23 = 8

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

x2 + 8x - 345 = 0

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

(x - 15 ) (x + 23)

To summarize, since -15 and 23 multiply to -345 and add up 8, you know that the following is true:

x2 + 8x - 345 = (x - 15 ) (x + 23)


Multiply To One Number and Add Up To Another
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