f(x) = (0x - 3)(x + 4)
0x - 3 = 0 or x + 4 = 0
+ 3 + 3 - 4 - 4
0x = 3 x = -4
0 0
x = 0
f(x) = (0x - 3)(x + 4)
f(3) = (0(3) - 3)(3 + 4)
f(3) = (0 - 3)(7)
f(3) = (-3)(7)
f(3)= -21
(x, f(x)) = (3, -21)
or
f(x) = (0x - 3)(x + 4)
f(-4) = (0(-4) - 3)(-4 + 4)
f(-4) = (0 - 3)(0)
f(-4) = (0)(0)
f(-4) - 0
(x, f(x)) = (-4, 0)