What two numbers multiply to 810 and add up to -91?

Here we answer the question: "What two numbers multiply to 810 and add up to -91?"

The answer to your question is:

-81 and -10

Below we illustrate and prove that -81 and -10 multiply to 810 and add up to -91:

-81 × -10 = 810
-81 + -10 = -91

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

x² - 91x + 810 = 0

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

(x - 81 ) (x - 10)

To summarize, since -81 and -10 multiply to 810 and add up -91, you know that the following is true:

x² - 91x + 810 = (x - 81 ) (x - 10)

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.