Quadratics

Question 1

how to prove that a curve has real, distinct roots

Answer 1

b^2 -4ac>0

Question 2

prove that a curve has 1 real root

Answer 2

b^2 -4ac=0

Question 3

prove a curve has no real distinct roots

Answer 3

b^2 -4ac<0

Question 4

what is the discriminant and where does it come from

Answer 4

b^2-4ac

comes from quadratic equation

Question 5

Roots of a quadratic equation

Answer 5

α and β
α + β= -b/a
αβ= c/a