Why is four squared called four squared

Guys i really need or i have to stay late up night

Write the equation in general quadratic form: plz !

Wholesome food company has been hired to design a healthy menu for the cafeteria at ridgemont high school. they want to conduct a survey to determine what percentage of ridgemont’s 15001500 students like broccoli. the survey will ask, “do you like broccoli? ”