#1**+1 **

x^3 - x^2 -4x + 4

f(-1) = (-1)^3 - (-1)^2 - 4(-1) + 4 = 6 ....so...first one is not true

If the second is true then

f(1) = 0 ... (1)^3 - (1)^2 -4(1) + 4 = 0 .....so....the second is true

Since x = 1 is a root....then the 3rd one is true

The 4th means the same thing as the first......

So...the 2nd and 3rd statements are true

CPhill
Feb 8, 2018