Equation for square and the area for square

What are the solution(s) to the quadratic equation x2 – 25 = 0? o x = 5 and x = -5ox=25 and x = -25o x = 125 and x = -125o no real solution

What is the absolute value of the complex number -4-sqrt2i

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?