A. Quadratic Formula x =
 Determine the values of a, b, c.
 Substitute the values into the formula.
 Simplify using order of operations
 Once simplified, for the ±, set up one equation with "+" and another with "".
 These xvalues are the solutions AND are the xintercepts of the graph.


B. Discriminant  it's the (b²  4ac) in the quadratic formula
 The value of (b^{2}  4ac) tells how many solutions or xintercepts the quadratic equation will have.
 If (b²  4ac) > 0, there are two real solutions or xintercepts
 If (b²  4ac) = 0, there is one real solution or xintercept.
 If (b²  4ac) < 0, there are no real solutions or xintercepts.


