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10 cards from this deck
Δ=b2−4ac\Delta = b^2 - 4acΔ=b2−4ac
Real and distinct
Real and equal
Complex conjugates
x=−b±b2−4ac2ax = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}x=2a−b±b2−4ac
Conjugate pairs
−1-1−1
a−bia - bia−bi
x=a±bix = a \pm bix=a±bi
x=−2±ix = -2 \pm ix=−2±i
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