What is a discriminant of the quadratic equation? What is its formula?
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Formula for d=b2-4ac
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D=B²-4ac
if b²-4ac=0. (real roots)
b²-4ac>0 (real roots)
b²-4ac<0 (no roots)
if b²-4ac=0. (real roots)
b²-4ac>0 (real roots)
b²-4ac<0 (no roots)
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