What two numbers multiply to 1 and add up to -2?

Here we answer the question: "What two numbers multiply to 1 and add up to -2?"

The answer to your question is:

-1 and -1

Below we illustrate and prove that -1 and -1 multiply to 1 and add up to -2:

-1 × -1 = 1
-1 + -1 = -2

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

x² - 2x + 1 = 0

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

(x - 1 ) (x - 1)

To summarize, since -1 and -1 multiply to 1 and add up -2, you know that the following is true:

x² - 2x + 1 = (x - 1 ) (x - 1)

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.