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Mathematics 11 Online
OpenStudy (anonymous):

Find the vertex of the parabola formed by the following quadratic function: y = 7x2 + 21x – 1

OpenStudy (anonymous):

a=7, b=21 and c=-1. The vertex is given by (-b/2a,-D/4a) where D is the discriminant given by (b^2)-(4ac)

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