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avatar+1016 

 

 Feb 7, 2018
 #1
avatar+101250 
+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

 

 

cool cool cool

 Feb 8, 2018

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