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10 questions from this quiz
To find xxx in quadratic equations
a=2,b=−7,c=3a=2, b=-7, c=3a=2,b=−7,c=3
Identify aaa, bbb, ccc
b2−4acb^2 - 4acb2−4ac
Two real roots
One real root
Add and subtract discriminant\sqrt{\text{discriminant}}discriminant
(7+5)/4(7+5)/4(7+5)/4 or (7−5)/4(7-5)/4(7−5)/4
To find both roots
7±54\frac{7 \pm 5}{4}47±5
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