Here we answer the question: "What two numbers multiply to -66 and add up to 19?"
The answer to your question is:
-3 and 22
Below we illustrate and prove that -3 and 22 multiply to -66 and add up to 19:
-3 × 22 = -66
-3 + 22 = 19
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 + 19x - 66 = 0
If so, the solution to factor the quadratic equation above is:
(x - 3 ) (x + 22)
To summarize, since -3 and 22 multiply to -66 and add up 19, you know that the following is true:
x2 + 19x - 66 = (x - 3 ) (x + 22)
Multiply To One Number and Add Up To Another
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