$x=\frac{-b\pm \sqrt{b^{2}-3\mathit{ac}}}{3a}$
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x=\frac{-b\pm \sqrt{b^{2}-3\mathit{ac}}}{3a}

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Bibliographic Details
Published in:	The Mathematics teacher Vol. 65; no. 8; pp. 707 - 709
Main Author:	MANDELBAUM, JOSEPH
Format:	Journal Article
Language:	English
Published:	National Council of Teachers of Mathematics 01-12-1972
Subjects:	Complex roots Discriminants Mathematical theorems Polynomials Quadratic equations Quadratic formula Sufficient conditions Tangents
Online Access:	Get full text
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ISSN:	0025-5769