Q: What multiplies into 30 and adds to negative 17?

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Assuming the question refers to two numbers, the answer is the complex conjugate pair:-15 Â± 25.981i where i is the imaginary square root of -1.

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a+b = 30 and ab = 48 then by substitutiuona(30-a) = 48a2 - 30a + 48 = 0use the quadratic formulaa = (30 +/- sq rt(900 - 192))/2a = 15 +/- sqrt (177)so the 2 numbers are (15 + sqrt 177) and (15 - sqrt 177)

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30 - 6 i root(31), and 30 + 6 i root(31)

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17 over 30 is 17/30 or 0.566.... (17 divded by 30)