What two numbers multiply to -645 and add up to -212?

Here we answer the question: "What two numbers multiply to -645 and add up to -212?"

The answer to your question is:

-215 and 3

Below we illustrate and prove that -215 and 3 multiply to -645 and add up to -212:

-215 × 3 = -645
-215 + 3 = -212

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

x² - 212x - 645 = 0

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

(x - 215 ) (x + 3)

To summarize, since -215 and 3 multiply to -645 and add up -212, you know that the following is true:

x² - 212x - 645 = (x - 215 ) (x + 3)

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.