Someone please help with quadratic formula, Complete the statements.

Graph ___ has one real root.

Graph ___ has a negative discriminant.

Graph ___ has an equation with coefficients

a = 1, b = 4, c = -2

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.

Describe the graph of 3x+2> 2 and 3x< 6

Determine whether angle-angle-angle (aaa) is a valid means for establishing triangle congruence. if it is a valid criterion, explain why. if it is not valid, use geogebra to create a counterexample demonstrating that it doesn’t work and give an explanation. if you construct a counterexample, take a screenshot of your work, save it, and insert the image in the space below.