Kelsall is a medium sized agricultural village situated around 8 miles west of the Roman city of Chester in Cheshire, England. The village is situated on Kelsall Hill, which is one of the hills that make up the sandstone ridge that runs along the western side of Cheshire. The ridge includes other hills including Peckforton[?], Beeston, Frodsham and Helsby[?].
... \pm \sqrt {b^2-4ac}}{2a}
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The term b2 – 4ac is called the discriminant of the quadratic equation, because it discriminates between three ...