What two numbers multiply to -65 and add up to 64?




Here we answer the question: "What two numbers multiply to -65 and add up to 64?"

The answer to your question is:

-1 and 65


Below we illustrate and prove that -1 and 65 multiply to -65 and add up to 64:

-1 × 65 = -65
-1 + 65 = 64

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

x2 + 64x - 65 = 0

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

(x - 1 ) (x + 65)

To summarize, since -1 and 65 multiply to -65 and add up 64, you know that the following is true:

x2 + 64x - 65 = (x - 1 ) (x + 65)


Multiply To One Number and Add Up To Another
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