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10 cards from this deck
b2−4acb^2 - 4acb2−4ac
Non-real or complex
One real, equal, rational root
Two real, unequal roots
Δ\DeltaΔ is a perfect square
Δ\DeltaΔ not a perfect square
Does not intersect x-axis
Touches x-axis at one point
Set Δ=0\Delta = 0Δ=0
Reject negatives if impractical
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