Here we answer the question: "What two numbers multiply to 195 and add up to 28?"
The answer to your question is:
13 and 15
Below we illustrate and prove that 13 and 15 multiply to 195 and add up to 28:
13 × 15 = 195
13 + 15 = 28
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 + 28x + 195 = 0
If so, the solution to factor the quadratic equation above is:
(x + 13 ) (x + 15)
To summarize, since 13 and 15 multiply to 195 and add up 28, you know that the following is true:
x2 + 28x + 195 = (x + 13 ) (x + 15)
Multiply To One Number and Add Up To Another
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