Here we answer the question: "What two numbers multiply to -664 and add up to -75?"
The answer to your question is:
-83 and 8
Below we illustrate and prove that -83 and 8 multiply to -664 and add up to -75:
-83 × 8 = -664
-83 + 8 = -75
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 - 75x - 664 = 0
If so, the solution to factor the quadratic equation above is:
(x - 83 ) (x + 8)
To summarize, since -83 and 8 multiply to -664 and add up -75, you know that the following is true:
x2 - 75x - 664 = (x - 83 ) (x + 8)
Multiply To One Number and Add Up To Another
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