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Find two numbers whose difference is 42adn product s -405

Find two numbers whose difference is 42 and product is -405

Set up 2 equations and 2 unknowns.

x - y = 42

xy = -405

Then rearrange the second so y = -405/x, and substitute this value of y into the first equation. Can you take it from here?

x = 27
y = 15

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