With fractions in the QE:
https://www.youtube.com/watch?v=MXHqLhRNIlI
The Quadratic Formula
Fighting arithmophobia one student at a time
leeman
The Quadratic Formula
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Fighting arithmophobia one student at a time
With fractions in the QE:
https://www.youtube.com/watch?v=MXHqLhRNIlI