What two numbers multiply to 840 and add up to -61?

Here we answer the question: "What two numbers multiply to 840 and add up to -61?"

The answer to your question is:

-40 and -21

Below we illustrate and prove that -40 and -21 multiply to 840 and add up to -61:

-40 × -21 = 840
-40 + -21 = -61

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

x² - 61x + 840 = 0

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

(x - 40 ) (x - 21)

To summarize, since -40 and -21 multiply to 840 and add up -61, you know that the following is true:

x² - 61x + 840 = (x - 40 ) (x - 21)

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.