What is the greatest common factor of 24 and
40?
A. 4
B. 8
C. 10
D. 12

the greatest common factor of 24 and 40 is a 8

8 because 12 can be 12, 24, 36, 48 not 40. 10 can be 10, 20, 30, 40 not 24. 8 can be 8, 16, 24, 32, 40, which contains, 24 and 40, and 8 is greater than 4 so there is your answer, 8.

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