What is the fully factored form of 32a^3 +12a^2

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.

Answer for 10 points show work you guys in advanced < 3

Rounded to the nearest tenth, what is the value of x