factorise-0-20-with-alpha-lines

Published at 800 × 800 in How many quadratics factorise?
The orange lines c = bα - α² for α = 0, 1, 2, 3 superimposed on our existing plot

The orange lines c = bα – α² for α = 0, 1, 2, 3 superimposed on our existing plot

The orange lines c = bα – α² for α = 0, 1, 2, 3 superimposed on our existing plot

Jigsaw is a talented chess player and fervent climber.
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