factorise-0-21

Published at 800 × 800 in How many quadratics factorise?
Quadratics of the form x² + bx + c which factorise, for b,c ≤ 20

Quadratics of the form x² + bx + c which factorise, for b,c ≤ 20

Quadratics of the form x² + bx + c which factorise, for b,c ≤ 20

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