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Thank you DragonLord I honestly forgot about that formula

off-topic
 Feb 4, 2020
 #1
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Its ok, there are many other ways to do that problem (eg. completing the square, factoring), laugh just remember the formula is \(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\) :D

 Feb 5, 2020

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