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Let's call the two numbers x and y. We know that x + y = -18 and xy = 45. To find the two numbers, we can set up a system of equations using these two relationships. By substituting -18 for x in the second equation, we get y(-18) = 45, which simplifies to y = -2.5. Substituting -2.5 for y in the first equation, we find x = -15. Therefore, the two numbers are -15 and -2.5.
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