What two numbers multiply to 225 and add up to 30?




Here we answer the question: "What two numbers multiply to 225 and add up to 30?"

The answer to your question is:

15 and 15


Below we illustrate and prove that 15 and 15 multiply to 225 and add up to 30:

15 × 15 = 225
15 + 15 = 30

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

x2 + 30x + 225 = 0

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

(x + 15 ) (x + 15)

To summarize, since 15 and 15 multiply to 225 and add up 30, you know that the following is true:

x2 + 30x + 225 = (x + 15 ) (x + 15)


Multiply To One Number and Add Up To Another
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