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    Very helpful, thank you. Confirms that the error was indeed not mine, much to my surprise. Usually I am the one making the error, but in this case, my calculations matched that of the hints, and th...

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    3. Aren't both 5 and -5 the square roots of 25?

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    Aren't both 5 and -5 the square roots of 25?

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    I was doing a problem that resulted in two possible values for the variable: -1 and 3. When I plugged each of those into the form y^2-2y-3=0, I got two true statements (9-9=0, and 3-3=0) so I looke...

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