Quadratic Time Savers- SAT

Memorize for SAT simplicity

Sum of the solutions to a quadratic

-b/a
aka double the axis of symmetry

Product of the solutions

c/a

Discriminant + meaning

b²-4ac, determines the roots of a quadratic. Positive discriminant = 2 real solutions, a zero discriminant = 1 real solution, negative discriminant = no REAL solutions

Axis of symmetry

-b/2a 

this is the x cord of vertex as well