Which of the following is a zero from the function f(x)=(x+3)(x-7)(x+5)? x=-7, x=-3, x=3, x=5

x = - 3

Step-by-step explanation:

To find the zeros set f(x) = 0, that is

(x + 3)(x - 7)(x + 5) = 0

Equate each factor to zero and solve for x

x + 3 = 0 ⇒ x = - 3

x - 7 = 0 ⇒ x = 7

x + 5 = 0 ⇒ x = - 5

1. perpendicular

2. parallel

3. perpendicular

since we know that the two functions are equal, f (x) = g

(x), therefore when we equate the two equations the result should be similar to

3x = x – 4:

a. f(x) = 3x, g(x) = x – 4

equating the two functions:

3x = x – 4             (correct)

so we now got our answer (a)