If there are 26 students in each third-grade class and 3 third-grade classes in the school, how many students will attend an assembly for third graders if a total of 4 students are absent? students

For this case we have to:

If there are 26 students in each grade level class and we have three classes of this type, we multiply to know the number of students:

Now, if there is an assembly for third grade students, knowing that 4 students were missing, we subtract to know the number of students present:

Thus, 74 students will be present at the assembly.

74

f(x) = x^3 -2x^2 -3x

x( x^2 -2x-3)

x( x^2 +x -3x -3)

x( x(x+1) -3(x+1))

x( x-3)( x+1)

so zeroes are 0, 3,-1

its (2) option