19 Which of the following statements isare equivalent to x5

19. Which of the following statements is/are equivalent to \"x+5 isa f(x)\"? (1) x-5 is a solution to f(x)-0 (2) x - -5 is a zero of f(x) (3) (-5,0) is an x-intercept of f(x). (A) 1 only (B) 2 only (C) 3 only (D) 1 and 3 only (E) 2 and 3 only 20. What is the domain? refer to the graph of F(x) in Figure 3.27 (b) [2,01 td) I-2,0] Fig. 3.27

Solution

19.
option E is correct because
if x=-5 then add 5 on both sides we get ,
x+5=-5+5
x+5=0 that means x+5 is a factor of polynomial

and also (-5,0) shows when x=-5 our y=0 hence this is also a factor of polynomial