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12 questions from this quiz
Δ=b2−4ac\Delta = b^2 - 4acΔ=b2−4ac
Two distinct real roots
One real root (repeated)
Complex (conjugate pairs)
4k2−12k4k^2 - 12k4k2−12k
k<0k < 0k<0 or k>3k > 3k>3
a>0a > 0a>0
x=−b2ax = -\frac{b}{2a}x=−2ab
ccc
444
(2,−1)(2, -1)(2,−1)
One (vertex touches x-axis)
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