Use the quadratic formula to determine the exact solutions to the equation. 2x2−9x+1=0

x=9±73√4

x=−9±89√4

x=9±73√2

x=9±89√2

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]

You dug a hole that was 8 feet deep. after taking a short break, you dug down 3 more feet in the same hole. when finished digging, a tractor accidentally filled the hole with 4 feet of dirt. how deep is your hole now?