Quadratic equation (Simple English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Quadratic equation" in Simple English language version.

refsWebsite

Global rank Simple English rank

3purplemath.com

low place

3,118^th place

1books.google.com

3^rd place

2^nd place

low place

low place

1mathsisfun.com

6,108^th place

103^rd place

782^nd place

383^rd place

books.google.com

Charles P. McKeague (2014). Intermediate Algebra with Trigonometry (reprinted ed.). Academic Press. p. 219. ISBN 978-1-4832-1875-5. Extract of page 219

mathsisfun.com

"Completing the Square". Math Is Fun. Retrieved 2018-04-06.

purplemath.com

Stapel, Elizabeth. "The Quadratic Formula Explained". Purplemath. Retrieved 2018-04-06.
Stapel, Elizabeth. "Completing the Square: Deriving the Quadratic Formula". Purplemath. Retrieved 2018-04-06.
Stapel, Elizabeth. "The Quadratic Formula: Solutions and the Discriminant". Purplemath. Retrieved 2018-04-06.

sosmath.com

"Solving Quadratic Equations". S.O.S. Math. Retrieved 2018-04-06.

ucla.edu

cdli.ucla.edu

Friberg, Jöran (2009). "A Geometric Algorithm with Solutions to Quadratic Equations in a Sumerian Juridical Document from Ur III Umma". Cuneiform Digital Library Journal. 3.