Quadratic equations Flashcards by Carys Thompson

Q

How to know if ax²+bx+c=0 has real roots

A

b²-4ac < 0 = 0 real roots
b²-4ac = 0 = 1 real root
b²-4ac > 0 = 2 real roots

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Q

Discriminant =

A

b²-4ac

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Q

a(x+b)² +c what is the turning point and line of symmetry

A

tp = (-b,c)
symmetry = x = -b

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