What two numbers multiply to 660 and add up to 71?

Here we answer the question: "What two numbers multiply to 660 and add up to 71?"

The answer to your question is:

11 and 60

Below we illustrate and prove that 11 and 60 multiply to 660 and add up to 71:

11 × 60 = 660
11 + 60 = 71

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

x² + 71x + 660 = 0

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

(x + 11 ) (x + 60)

To summarize, since 11 and 60 multiply to 660 and add up 71, you know that the following is true:

x² + 71x + 660 = (x + 11 ) (x + 60)

Multiply To One Number and Add Up To Another
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